What is a 23-digit number?

A 23-digit number is a number that has 23 digits where the first digit must be 1 or greater. On this page, we will answer three questions for you: What is the smallest 23-digit number? What is the largest 23-digit number? How many 23-digit numbers are there?

Smallest 23-digit number
The smallest 23-digit number is 1 followed by 22 zeros. This number is called ten sextillion.

Largest 23-digit number
The largest 23-digit number is 9 followed by another 22 nines. This number is called 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 23-digit numbers
There are a total of ninety sextillion different 23-digit numbers. ninety sextillion is 9 followed by 22 zeros.

Digit Numbers
Here you can learn about another digit number.

What is a 24-digit number?
Go here for information about the next digit number on our list that we have information about.