16656525613 has 16 divisors (see below), whose sum is σ = 20503401856. Its totient is φ = 13176820800.

The previous prime is 16656525607. The next prime is 16656525629. The reversal of 16656525613 is 31652565661.

It is not a de Polignac number, because 16656525613 - 2⁵ = 16656525581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16656525673) 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, 1056970 + ... + 1072612.

It is an arithmetic number, because the mean of its divisors is an integer number (1281462616).

Almost surely, 2^16656525613 is an apocalyptic number.

16656525613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16656525613 is a deficient number, since it is larger than the sum of its proper divisors (3846876243).

16656525613 is a wasteful number, since it uses less digits than its factorization.

16656525613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27364.

The product of its digits is 972000, while the sum is 46.

The spelling of 16656525613 in words is "sixteen billion, six hundred fifty-six million, five hundred twenty-five thousand, six hundred thirteen".