How Many Zeros in a Quattuordecillion?
A quattuordecillion has 45 zeros: 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. In scientific notation, the zeros in a quattuordecillion are represented as 1045. The full number is 46 digits long — 1 followed by 45 zeros — placing it between tredecillion (1042) and quindecillion (1048) in the short-scale sequence used in the United States. In the long-scale system used historically in parts of Europe, a quattuordecillion has 84 zeros (1084). The Latin prefix quattuor- means four, combined with dec- for ten, indicating the 15th name in the "-illion" sequence. See also: Zeros in a quadrillion.
A quattuordecillion has
45
zeros
- Written Form
- 1 followed by 45 zeros
- Scientific
- 10⁴⁵
What Does Quattuordecillion Mean, and How Many Zeros Does It Have?
Quattuordecillion literally means the 14th power of one thousand, scaled up from one: 1,00015 = 1045. The name follows the same Latin-prefix pattern used for all standard "-illion" names — quattuor (four) + dec (ten) = fourteen, indicating the 15th step in the sequence (counting million as the first). Related: Hundred zeros.
How many zeros does it have? Exactly 45 — three times fifteen. You can verify this by counting the comma-separated digit groups in the written form:
1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
There are 15 groups of three digits, confirming 45 zeros. The number is pronounced "kwat-oo-or-deh-SILL-ee-on." Like all formally defined "-illion" names, it is a real number used in mathematics and large-scale scientific contexts.
How Many Zeros Are in 10 Quattuordecillion and 100 Quattuordecillion?
Each multiplication by 10 adds one zero to the count: See also: Zeros in a vigintillion.
- 1 quattuordecillion = 1045 — 45 zeros
- 10 quattuordecillion = 1046 — 46 zeros
- 100 quattuordecillion = 1047 — 47 zeros
- 1,000 quattuordecillion = 1048 — 48 zeros (= one quindecillion)
This additive pattern applies throughout the short-scale sequence. The exponent in scientific notation always tells you directly how many zeros follow the leading digit, making it the most efficient way to work with numbers at the quattuordecillion scale and beyond. At 1045, quantities are exclusively theoretical — no physical measurement or count of observable objects reaches this range.