16612122564 has 36 divisors (see below), whose sum is σ = 42086584176. Its totient is φ = 5524869168.

The previous prime is 16612122563. The next prime is 16612122581. The reversal of 16612122564 is 46522121661.

16612122564 is a `hidden beast` number, since 1 + 6 + 612 + 12 + 25 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16612122563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504874 + ... + 536769.

Almost surely, 2^16612122564 is an apocalyptic number.

It is an amenable number.

16612122564 is an abundant number, since it is smaller than the sum of its proper divisors (25474461612).

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

16612122564 is a wasteful number, since it uses less digits than its factorization.

16612122564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042096 (or 1042091 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 16612122564 in words is "sixteen billion, six hundred twelve million, one hundred twenty-two thousand, five hundred sixty-four".