56556871284 has 48 divisors (see below), whose sum is σ = 139570081280. Its totient is φ = 17775404640.

The previous prime is 56556871271. The next prime is 56556871291. The reversal of 56556871284 is 48217865565.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539704 + ... + 635919.

Almost surely, 2^56556871284 is an apocalyptic number.

It is an amenable number.

56556871284 is an abundant number, since it is smaller than the sum of its proper divisors (83013209996).

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

56556871284 is a wasteful number, since it uses less digits than its factorization.

56556871284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175860 (or 1175858 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 57.

The spelling of 56556871284 in words is "fifty-six billion, five hundred fifty-six million, eight hundred seventy-one thousand, two hundred eighty-four".