56117228388 has 48 divisors (see below), whose sum is σ = 142944230016. Its totient is φ = 17030304000.

The previous prime is 56117228357. The next prime is 56117228393. The reversal of 56117228388 is 88382271165.

It is a self number, because there is not a number n which added to its sum of digits gives 56117228388.

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 15 ways as a sum of consecutive naturals, for example, 2452488 + ... + 2475263.

It is an arithmetic number, because the mean of its divisors is an integer number (2978004792).

Almost surely, 2^56117228388 is an apocalyptic number.

It is an amenable number.

56117228388 is an abundant number, since it is smaller than the sum of its proper divisors (86827001628).

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

56117228388 is a wasteful number, since it uses less digits than its factorization.

56117228388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4927844 (or 4927842 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The spelling of 56117228388 in words is "fifty-six billion, one hundred seventeen million, two hundred twenty-eight thousand, three hundred eighty-eight".