56577221824 has 56 divisors (see below), whose sum is σ = 119337703920. Its totient is φ = 26520846336.

The previous prime is 56577221821. The next prime is 56577221839. The reversal of 56577221824 is 42812277565.

It is not an unprimeable number, because it can be changed into a prime (56577221821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178447 + ... + 380785.

Almost surely, 2^56577221824 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 56577221824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59668851960).

56577221824 is an abundant number, since it is smaller than the sum of its proper divisors (62760482096).

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

56577221824 is a wasteful number, since it uses less digits than its factorization.

56577221824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202625 (or 202615 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The spelling of 56577221824 in words is "fifty-six billion, five hundred seventy-seven million, two hundred twenty-one thousand, eight hundred twenty-four".