56856522018 has 16 divisors (see below), whose sum is σ = 115270757856. Its totient is φ = 18692555040.

The previous prime is 56856522001. The next prime is 56856522029. The reversal of 56856522018 is 81022565865.

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 7 ways as a sum of consecutive naturals, for example, 64904268 + ... + 64905143.

It is an arithmetic number, because the mean of its divisors is an integer number (7204422366).

Almost surely, 2^56856522018 is an apocalyptic number.

56856522018 is an abundant number, since it is smaller than the sum of its proper divisors (58414235838).

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

56856522018 is a wasteful number, since it uses less digits than its factorization.

56856522018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129809489.

The product of its (nonzero) digits is 1152000, while the sum is 48.

The spelling of 56856522018 in words is "fifty-six billion, eight hundred fifty-six million, five hundred twenty-two thousand, eighteen".