56111672838 has 64 divisors (see below), whose sum is σ = 122612478912. Its totient is φ = 17015685120.

The previous prime is 56111672819. The next prime is 56111672861. The reversal of 56111672838 is 83827611165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1808020 + ... + 1838792.

It is an arithmetic number, because the mean of its divisors is an integer number (1915819983).

Almost surely, 2^56111672838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56111672838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61306239456).

56111672838 is an abundant number, since it is smaller than the sum of its proper divisors (66500806074).

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

56111672838 is a wasteful number, since it uses less digits than its factorization.

56111672838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31129.

The product of its digits is 483840, while the sum is 48.

The spelling of 56111672838 in words is "fifty-six billion, one hundred eleven million, six hundred seventy-two thousand, eight hundred thirty-eight".