Q: What is the negative version of the number 645,604,515?
A: -645,604,515
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:
| 645,604,513 | 645,604,514 | 645,604,516 | 645,604,517 |
| -645,604,513 | -645,604,514 | -645,604,516 | -645,604,517 |