56601121656 has 32 divisors (see below), whose sum is σ = 141535602000. Its totient is φ = 18862667520.

The previous prime is 56601121637. The next prime is 56601121673. The reversal of 56601121656 is 65612110665.

56601121656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 166765 + ... + 375516.

Almost surely, 2^56601121656 is an apocalyptic number.

It is an amenable number.

56601121656 is an abundant number, since it is smaller than the sum of its proper divisors (84934480344).

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

56601121656 is a wasteful number, since it uses less digits than its factorization.

56601121656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546639 (or 546635 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 56601121656 in words is "fifty-six billion, six hundred one million, one hundred twenty-one thousand, six hundred fifty-six".