56701551636 has 60 divisors (see below), whose sum is σ = 148526532000. Its totient is φ = 18862586640.

The previous prime is 56701551587. The next prime is 56701551637. The reversal of 56701551636 is 63615510765.

56701551636 is a `hidden beast` number, since 5 + 6 + 7 + 0 + 1 + 5 + 5 + 1 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 56701551591 and 56701551600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56701551637) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13680 + ... + 337031.

It is an arithmetic number, because the mean of its divisors is an integer number (2475442200).

Almost surely, 2^56701551636 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 56701551636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74263266000).

56701551636 is an abundant number, since it is smaller than the sum of its proper divisors (91824980364).

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

56701551636 is a wasteful number, since it uses less digits than its factorization.

56701551636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351226 (or 351215 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The spelling of 56701551636 in words is "fifty-six billion, seven hundred one million, five hundred fifty-one thousand, six hundred thirty-six".