56659786899516 has 96 divisors (see below), whose sum is σ = 157140141238080. Its totient is φ = 17592365555712.

The previous prime is 56659786899511. The next prime is 56659786899589. The reversal of 56659786899516 is 61599868795665.

56659786899516 is a `hidden beast` number, since 5 + 6 + 6 + 5 + 9 + 7 + 8 + 6 + 89 + 9 + 516 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56659786899511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158896395 + ... + 159252578.

It is an arithmetic number, because the mean of its divisors is an integer number (1636876471230).

Almost surely, 2^{56659786899516} is an apocalyptic number.

It is an amenable number.

56659786899516 is an abundant number, since it is smaller than the sum of its proper divisors (100480354338564).

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

56659786899516 is a wasteful number, since it uses less digits than its factorization.

56659786899516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318149100 (or 318149092 counting only the distinct ones).

The product of its digits is 52907904000, while the sum is 90.

The spelling of 56659786899516 in words is "fifty-six trillion, six hundred fifty-nine billion, seven hundred eighty-six million, eight hundred ninety-nine thousand, five hundred sixteen".