56388682518 has 32 divisors (see below), whose sum is σ = 131320279296. Its totient is φ = 15807069408.

The previous prime is 56388682517. The next prime is 56388682549. The reversal of 56388682518 is 81528688365.

It is a happy number.

It is a super-2 number, since 2×56388682518² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56388682517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12663696 + ... + 12668147.

It is an arithmetic number, because the mean of its divisors is an integer number (4103758728).

Almost surely, 2^56388682518 is an apocalyptic number.

56388682518 is an abundant number, since it is smaller than the sum of its proper divisors (74931596778).

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

56388682518 is a wasteful number, since it uses less digits than its factorization.

56388682518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25331908.

The product of its digits is 22118400, while the sum is 60.

The spelling of 56388682518 in words is "fifty-six billion, three hundred eighty-eight million, six hundred eighty-two thousand, five hundred eighteen".