56936765856 has 96 divisors (see below), whose sum is σ = 150558730560. Its totient is φ = 18839568384.

The previous prime is 56936765843. The next prime is 56936765861. The reversal of 56936765856 is 65856763965.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×56936765856² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17101600 + ... + 17104928.

It is an arithmetic number, because the mean of its divisors is an integer number (1568320110).

Almost surely, 2^56936765856 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 56936765856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75279365280).

56936765856 is an abundant number, since it is smaller than the sum of its proper divisors (93621964704).

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

56936765856 is a wasteful number, since it uses less digits than its factorization.

56936765856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598 (or 4590 counting only the distinct ones).

The product of its digits is 244944000, while the sum is 66.

The spelling of 56936765856 in words is "fifty-six billion, nine hundred thirty-six million, seven hundred sixty-five thousand, eight hundred fifty-six".