666392232988 has 24 divisors (see below), whose sum is σ = 1168185531744. Its totient is φ = 332625100800.

The previous prime is 666392232983. The next prime is 666392233007. The reversal of 666392232988 is 889232293666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666392232983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20908881 + ... + 20940727.

It is an arithmetic number, because the mean of its divisors is an integer number (48674397156).

Almost surely, 2^666392232988 is an apocalyptic number.

It is an amenable number.

666392232988 is a deficient number, since it is larger than the sum of its proper divisors (501793298756).

666392232988 is a wasteful number, since it uses less digits than its factorization.

666392232988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40653 (or 40651 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 64.

The spelling of 666392232988 in words is "six hundred sixty-six billion, three hundred ninety-two million, two hundred thirty-two thousand, nine hundred eighty-eight".