56616657604140 has 48 divisors (see below), whose sum is σ = 159005573798400. Its totient is φ = 15052162741440.

The previous prime is 56616657604123. The next prime is 56616657604147. The reversal of 56616657604140 is 4140675661665.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56616657604147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425374340 + ... + 1425414059.

It is an arithmetic number, because the mean of its divisors is an integer number (3312616120800).

Almost surely, 2^{56616657604140} is an apocalyptic number.

It is an amenable number.

56616657604140 is an abundant number, since it is smaller than the sum of its proper divisors (102388916194260).

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

56616657604140 is a wasteful number, since it uses less digits than its factorization.

56616657604140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850788742 (or 2850788740 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 57.

The spelling of 56616657604140 in words is "fifty-six trillion, six hundred sixteen billion, six hundred fifty-seven million, six hundred four thousand, one hundred forty".