56816554015 has 16 divisors (see below), whose sum is σ = 75793003776. Its totient is φ = 40603392000.

The previous prime is 56816553971. The next prime is 56816554021. The reversal of 56816554015 is 51045561865.

It is not a de Polignac number, because 56816554015 - 2⁹ = 56816553503 is a prime.

It is a Duffinian number.

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, 14096386 + ... + 14100415.

It is an arithmetic number, because the mean of its divisors is an integer number (4737062736).

Almost surely, 2^56816554015 is an apocalyptic number.

56816554015 is a deficient number, since it is larger than the sum of its proper divisors (18976449761).

56816554015 is a wasteful number, since it uses less digits than its factorization.

56816554015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28196850.

The product of its (nonzero) digits is 720000, while the sum is 46.

The spelling of 56816554015 in words is "fifty-six billion, eight hundred sixteen million, five hundred fifty-four thousand, fifteen".