56536862720 has 104 divisors (see below), whose sum is σ = 146108895576. Its totient is φ = 20875051008.

The previous prime is 56536862717. The next prime is 56536862737. The reversal of 56536862720 is 2726863565.

It can be written as a sum of positive squares in 4 ways, for example, as 4128833536 + 52408029184 = 64256^2 + 228928^2 .

It is a tau number, because it is divible by the number of its divisors (104).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160064 + ... + 372416.

Almost surely, 2^56536862720 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 56536862720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73054447788).

56536862720 is an abundant number, since it is smaller than the sum of its proper divisors (89572032856).

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

56536862720 is a wasteful number, since it uses less digits than its factorization.

56536862720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212395 (or 212373 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 56536862720 in words is "fifty-six billion, five hundred thirty-six million, eight hundred sixty-two thousand, seven hundred twenty".