16560688916 has 12 divisors (see below), whose sum is σ = 29084343540. Its totient is φ = 8250876480.

The previous prime is 16560688891. The next prime is 16560688981. The reversal of 16560688916 is 61988606561.

It can be written as a sum of positive squares in 2 ways, for example, as 14102512516 + 2458176400 = 118754^2 + 49580^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7365731 + ... + 7367978.

It is an arithmetic number, because the mean of its divisors is an integer number (2423695295).

Almost surely, 2^16560688916 is an apocalyptic number.

It is an amenable number.

16560688916 is a deficient number, since it is larger than the sum of its proper divisors (12523654624).

16560688916 is a wasteful number, since it uses less digits than its factorization.

16560688916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14733994 (or 14733992 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 16560688916 in words is "sixteen billion, five hundred sixty million, six hundred eighty-eight thousand, nine hundred sixteen".