56136939520 has 96 divisors (see below), whose sum is σ = 136594654560. Its totient is φ = 22138224640.

The previous prime is 56136939491. The next prime is 56136939563. The reversal of 56136939520 is 2593963165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688434 + ... + 765646.

It is an arithmetic number, because the mean of its divisors is an integer number (1422860985).

Almost surely, 2^56136939520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56136939520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68297327280).

56136939520 is an abundant number, since it is smaller than the sum of its proper divisors (80457715040).

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

56136939520 is an equidigital number, since it uses as much as digits as its factorization.

56136939520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77311 (or 77291 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 49.

The spelling of 56136939520 in words is "fifty-six billion, one hundred thirty-six million, nine hundred thirty-nine thousand, five hundred twenty".