56605656516 has 12 divisors (see below), whose sum is σ = 132079865232. Its totient is φ = 18868552168.

The previous prime is 56605656511. The next prime is 56605656553. The reversal of 56605656516 is 61565650665.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (56605656511) 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, 2358569010 + ... + 2358569033.

It is an arithmetic number, because the mean of its divisors is an integer number (11006655436).

Almost surely, 2^56605656516 is an apocalyptic number.

It is an amenable number.

56605656516 is an abundant number, since it is smaller than the sum of its proper divisors (75474208716).

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

56605656516 is a wasteful number, since it uses less digits than its factorization.

56605656516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717138050 (or 4717138048 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 56605656516 in words is "fifty-six billion, six hundred five million, six hundred fifty-six thousand, five hundred sixteen".