Q: What is the negative version of the number 640,061,405?
A: -640,061,405
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:
| 640,061,403 | 640,061,404 | 640,061,406 | 640,061,407 |
| -640,061,403 | -640,061,404 | -640,061,406 | -640,061,407 |