56009646872 has 16 divisors (see below), whose sum is σ = 105145704240. Its totient is φ = 27970792416.

The previous prime is 56009646871. The next prime is 56009646877. The reversal of 56009646872 is 27864690065.

It is a super-2 number, since 2×56009646872² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56009646871) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4246883 + ... + 4260050.

It is an arithmetic number, because the mean of its divisors is an integer number (6571606515).

Almost surely, 2^56009646872 is an apocalyptic number.

It is an amenable number.

56009646872 is a deficient number, since it is larger than the sum of its proper divisors (49136057368).

56009646872 is a wasteful number, since it uses less digits than its factorization.

56009646872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507762 (or 8507758 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 56009646872 in words is "fifty-six billion, nine million, six hundred forty-six thousand, eight hundred seventy-two".