What is a 27-digit number?

A 27-digit number is a number that has 27 digits where the first digit must be 1 or greater. On this page, we will answer three questions for you: What is the smallest 27-digit number? What is the largest 27-digit number? How many 27-digit numbers are there?

Smallest 27-digit number
The smallest 27-digit number is 1 followed by 26 zeros. This number is called one hundred septillion.

Largest 27-digit number
The largest 27-digit number is 9 followed by another 26 nines. This number is called 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 27-digit numbers
There are a total of nine hundred septillion different 27-digit numbers. nine hundred septillion is 9 followed by 26 zeros.

Digit Numbers
Here you can learn about another digit number.

What is a 28-digit number?
Go here for information about the next digit number on our list that we have information about.