56111660904 has 64 divisors (see below), whose sum is σ = 151093756800. Its totient is φ = 17262395136.

The previous prime is 56111660851. The next prime is 56111660933. The reversal of 56111660904 is 40906611165.

56111660904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2947962 + ... + 2966934.

It is an arithmetic number, because the mean of its divisors is an integer number (2360839950).

Almost surely, 2^56111660904 is an apocalyptic number.

It is an amenable number.

56111660904 is an abundant number, since it is smaller than the sum of its proper divisors (94982095896).

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

56111660904 is a wasteful number, since it uses less digits than its factorization.

56111660904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28474 (or 28470 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 56111660904 in words is "fifty-six billion, one hundred eleven million, six hundred sixty thousand, nine hundred four".