56516616165603 has 24 divisors (see below), whose sum is σ = 82829736569664. Its totient is φ = 34252090710640.

The previous prime is 56516616165589. The next prime is 56516616165649. The reversal of 56516616165603 is 30656161661565.

It is not a de Polignac number, because 56516616165603 - 2¹⁷ = 56516616034531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56516616165103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31478176 + ... + 33225122.

It is an arithmetic number, because the mean of its divisors is an integer number (3451239023736).

Almost surely, 2^{56516616165603} is an apocalyptic number.

56516616165603 is a deficient number, since it is larger than the sum of its proper divisors (26313120404061).

56516616165603 is a wasteful number, since it uses less digits than its factorization.

56516616165603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836095 (or 1836084 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 57.

The spelling of 56516616165603 in words is "fifty-six trillion, five hundred sixteen billion, six hundred sixteen million, one hundred sixty-five thousand, six hundred three".