Q: What is the negative version of the number 664,431,615?
A: -664,431,615
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 664,431,613 | 664,431,614 | 664,431,616 | 664,431,617 |
| -664,431,613 | -664,431,614 | -664,431,616 | -664,431,617 |