16564635316056 has 32 divisors (see below), whose sum is σ = 41838511886640. Its totient is φ = 5464621959168.

The previous prime is 16564635316039. The next prime is 16564635316157. The reversal of 16564635316056 is 65061353646561.

It is a happy number.

It is a super-2 number, since 2×16564635316056² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16564635315987 and 16564635316005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3557694261 + ... + 3557698916.

Almost surely, 2^{16564635316056} is an apocalyptic number.

It is an amenable number.

16564635316056 is an abundant number, since it is smaller than the sum of its proper divisors (25273876570584).

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

16564635316056 is a wasteful number, since it uses less digits than its factorization.

16564635316056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115393283 (or 7115393279 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 57.

The spelling of 16564635316056 in words is "sixteen trillion, five hundred sixty-four billion, six hundred thirty-five million, three hundred sixteen thousand, fifty-six".