16564161025116 has 36 divisors (see below), whose sum is σ = 41870642285472. Its totient is φ = 5521370638464.

The previous prime is 16564161025057. The next prime is 16564161025127. The reversal of 16564161025116 is 61152016146561.

It is a happy number.

16564161025116 is a `hidden beast` number, since 1 + 6 + 5 + 6 + 4 + 1 + 610 + 25 + 1 + 1 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21602740 + ... + 22356356.

Almost surely, 2^{16564161025116} is an apocalyptic number.

It is an amenable number.

16564161025116 is an abundant number, since it is smaller than the sum of its proper divisors (25306481260356).

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

16564161025116 is a wasteful number, since it uses less digits than its factorization.

16564161025116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364170 (or 1364165 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 16564161025116 in words is "sixteen trillion, five hundred sixty-four billion, one hundred sixty-one million, twenty-five thousand, one hundred sixteen".