16564044032625 has 32 divisors (see below), whose sum is σ = 27573039037440. Its totient is φ = 8830801123200.

The previous prime is 16564044032617. The next prime is 16564044032659. The reversal of 16564044032625 is 52623044046561.

It is not a de Polignac number, because 16564044032625 - 2³ = 16564044032617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7400545 + ... + 9375294.

It is an arithmetic number, because the mean of its divisors is an integer number (861657469920).

Almost surely, 2^{16564044032625} is an apocalyptic number.

16564044032625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16564044032625 is a deficient number, since it is larger than the sum of its proper divisors (11008995004815).

16564044032625 is a wasteful number, since it uses less digits than its factorization.

16564044032625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16778490 (or 16778480 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 16564044032625 in words is "sixteen trillion, five hundred sixty-four billion, forty-four million, thirty-two thousand, six hundred twenty-five".