56057603664 has 80 divisors (see below), whose sum is σ = 149963973120. Its totient is φ = 18022878720.

The previous prime is 56057603659. The next prime is 56057603671. The reversal of 56057603664 is 46630675065.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 1359154 + ... + 1399790.

It is an arithmetic number, because the mean of its divisors is an integer number (1874549664).

Almost surely, 2^56057603664 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 56057603664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74981986560).

56057603664 is an abundant number, since it is smaller than the sum of its proper divisors (93906369456).

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

56057603664 is a wasteful number, since it uses less digits than its factorization.

56057603664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41668 (or 41662 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 48.

The spelling of 56057603664 in words is "fifty-six billion, fifty-seven million, six hundred three thousand, six hundred sixty-four".