Q: What is the negative version of the number 666,545,421?
A: -666,545,421
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:
| 666,545,419 | 666,545,420 | 666,545,422 | 666,545,423 |
| -666,545,419 | -666,545,420 | -666,545,422 | -666,545,423 |