56211640464 has 120 divisors (see below), whose sum is σ = 176266307520. Its totient is φ = 15362172672.

The previous prime is 56211640453. The next prime is 56211640489. The reversal of 56211640464 is 46404611265.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465459 + ... + 573650.

It is an arithmetic number, because the mean of its divisors is an integer number (1468885896).

Almost surely, 2^56211640464 is an apocalyptic number.

It is an amenable number.

56211640464 is an abundant number, since it is smaller than the sum of its proper divisors (120054667056).

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

56211640464 is a wasteful number, since it uses less digits than its factorization.

56211640464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039157 (or 1039144 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 56211640464 in words is "fifty-six billion, two hundred eleven million, six hundred forty thousand, four hundred sixty-four".