56665660116 has 72 divisors (see below), whose sum is σ = 150708522720. Its totient is φ = 16517913984.

The previous prime is 56665660081. The next prime is 56665660169. The reversal of 56665660116 is 61106656665.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696775 + ... + 773838.

Almost surely, 2^56665660116 is an apocalyptic number.

It is an amenable number.

56665660116 is an abundant number, since it is smaller than the sum of its proper divisors (94042862604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56665660116 is a wasteful number, since it uses less digits than its factorization.

56665660116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470665 (or 1470650 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 56665660116 in words is "fifty-six billion, six hundred sixty-five million, six hundred sixty thousand, one hundred sixteen".