56172833886 has 32 divisors (see below), whose sum is σ = 121520665728. Its totient is φ = 17207802720.

The previous prime is 56172833881. The next prime is 56172833897. The reversal of 56172833886 is 68833827165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56172833881) 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 15 ways as a sum of consecutive naturals, for example, 1568560 + ... + 1603971.

It is an arithmetic number, because the mean of its divisors is an integer number (3797520804).

Almost surely, 2^56172833886 is an apocalyptic number.

56172833886 is an abundant number, since it is smaller than the sum of its proper divisors (65347831842).

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

56172833886 is a wasteful number, since it uses less digits than its factorization.

56172833886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172776.

The product of its digits is 11612160, while the sum is 57.

The spelling of 56172833886 in words is "fifty-six billion, one hundred seventy-two million, eight hundred thirty-three thousand, eight hundred eighty-six".