# quintillion

A quintillion is a very large number. It's equal to a billion billion (1,000,000,000,000).

A quintillion is a very large number. It's equal to a billion billion (1,000,000,000,000).

noun

the number that is represented as a one followed by 18 zeros

1

Now multiply that by a

**quintillion.**2

So 5

**quintillion**bits per second.3

A

**quintillion**would take longer than the age of the universe.4

To do a cube with that diameter would take a

**quintillion**scans.5

But you can't write down, say, a string of a

**quintillion**symbols, either.