What is a 72-digit number?

A 72-digit number is a number that has 72 digits where the first digit must be 1 or greater. On this page, we will answer three questions for you: What is the smallest 72-digit number? What is the largest 72-digit number? How many 72-digit numbers are there?

Smallest 72-digit number
The smallest 72-digit number is 1 followed by 71 zeros. This number is called one hundred duovigintillion.

Largest 72-digit number
The largest 72-digit number is 9 followed by another 71 nines. This number is called nine hundred ninety-nine duovigintillion nine hundred ninety-nine unvigintillion nine hundred ninety-nine vigintillion nine hundred ninety-nine novemdecillion nine hundred ninety-nine octodecillion nine hundred ninety-nine septendecillion nine hundred ninety-nine sexdecillion nine hundred ninety-nine quindecillion nine hundred ninety-nine quattuordecillion nine hundred ninety-nine tredecillion nine hundred ninety-nine duodecillion nine hundred ninety-nine undecillion nine hundred ninety-nine decillion nine hundred ninety-nine nonillion nine hundred ninety-nine octillion nine hundred ninety-nine septillion nine hundred ninety-nine sextillion nine hundred ninety-nine quintillion nine hundred ninety-nine quadrillion nine hundred ninety-nine trillion nine hundred ninety-nine billion nine hundred ninety-nine million nine hundred ninety-nine thousand nine hundred ninety-nine.

Total number of 72-digit numbers
There are a total of nine hundred duovigintillion different 72-digit numbers. nine hundred duovigintillion is 9 followed by 71 zeros.

Digit Numbers
Here you can learn about another digit number.

What is a 73-digit number?
Go here for information about the next digit number on our list that we have information about.