6665166736 has 40 divisors (see below), whose sum is σ = 12991605984. Its totient is φ = 3312545280.

The previous prime is 6665166719. The next prime is 6665166737. The reversal of 6665166736 is 6376615666.

It is not an unprimeable number, because it can be changed into a prime (6665166737) 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, 3198751 + ... + 3200833.

Almost surely, 2^6665166736 is an apocalyptic number.

It is an amenable number.

6665166736 is a deficient number, since it is larger than the sum of its proper divisors (6326439248).

6665166736 is a wasteful number, since it uses less digits than its factorization.

6665166736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199 (or 3193 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 52.

The square root of 6665166736 is about 81640.4724141158. The cubic root of 6665166736 is about 1881.9308982952.

The spelling of 6665166736 in words is "six billion, six hundred sixty-five million, one hundred sixty-six thousand, seven hundred thirty-six".