How Many Zeros in a Novemdecillion?
A novemdecillion has 60 zeros in the short-scale system: 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. In scientific notation this is 1060. The name comes from the Latin novemdecim (nineteen), making it the 19th "-illion" after a million in the standard US numbering sequence. Novemdecillion follows octodecillion (1057) and comes just before vigintillion (1063). At this scale, the number has physical significance — the estimated volume of the observable universe measured in cubic inches is in the novemdecillion range. In the long-scale system, the same word means 10114, or 114 zeros. See also: How many zeros in a thousand.
A novemdecillion has
60
zeros
- Written Form
- 1 followed by 60 zeros
- Scientific
- 10⁶⁰
Is Novemdecillion a Real Number, and How Many Zeros Does It Have?
Yes — novemdecillion is a real, formally defined number. It is not slang or an approximation. In the US short-scale system, it equals 1060: exactly 60 zeros following the digit 1. The zero count follows the standard formula: the 19th "-illion" has 3 × 19 + 3 = 60 zeros. Related: How many zeros in a million.
The number also appears in legitimate scientific contexts. Some estimates of the volume of the observable universe expressed in cubic inches land in the novemdecillion range (roughly 4 × 1061), making it one of the higher "-illion" names that still connects to a measurable physical quantity.
| Name | Zeros | Scientific Notation |
|---|---|---|
| Octodecillion | 57 | 1057 |
| Novemdecillion | 60 | 1060 |
| Vigintillion | 63 | 1063 |
What Is the Long-Scale Novemdecillion?
In the long-scale system, a novemdecillion equals 10114 — a number with 114 zeros. The long scale computes each "-illion" as (106)n, so novemdecillion = (106)19 = 10114. This differs from the short-scale value by a factor of 1054, which is one septendecillion. Related: How many zeros does a septendecillion have.
The novemdecillion name is sometimes written as novendecillion (with a v instead of m). Both spellings refer to the same number. The novem- variant is slightly more common in American dictionaries, while noven- appears in some British and European sources.