Q: What is the negative version of the number 664,420,401?
A: -664,420,401
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:
| 664,420,399 | 664,420,400 | 664,420,402 | 664,420,403 |
| -664,420,399 | -664,420,400 | -664,420,402 | -664,420,403 |