56821206560 has 24 divisors (see below), whose sum is σ = 134240100876. Its totient is φ = 22728482560.

The previous prime is 56821206511. The next prime is 56821206569. The reversal of 56821206560 is 6560212865.

56821206560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52740041104 + 4081165456 = 229652^2 + 63884^2 .

It is not an unprimeable number, because it can be changed into a prime (56821206569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177566111 + ... + 177566430.

Almost surely, 2^56821206560 is an apocalyptic number.

It is an amenable number.

56821206560 is an abundant number, since it is smaller than the sum of its proper divisors (77418894316).

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

56821206560 is a wasteful number, since it uses less digits than its factorization.

56821206560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355132556 (or 355132548 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 56821206560 in words is "fifty-six billion, eight hundred twenty-one million, two hundred six thousand, five hundred sixty".