56256020136 has 24 divisors (see below), whose sum is σ = 152360054730. Its totient is φ = 18752006688.

The previous prime is 56256020131. The next prime is 56256020143. The reversal of 56256020136 is 63102065265.

It is a happy number.

56256020136 is a `hidden beast` number, since 5 + 62 + 560 + 2 + 0 + 1 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43936352100 + 12319668036 = 209610^2 + 110994^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 56256020136.

It is not an unprimeable number, because it can be changed into a prime (56256020131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 390666735 + ... + 390666878.

Almost surely, 2^56256020136 is an apocalyptic number.

It is an amenable number.

56256020136 is an abundant number, since it is smaller than the sum of its proper divisors (96104034594).

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

56256020136 is a wasteful number, since it uses less digits than its factorization.

56256020136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781333625 (or 781333618 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 56256020136 in words is "fifty-six billion, two hundred fifty-six million, twenty thousand, one hundred thirty-six".