16564635247216 has 40 divisors (see below), whose sum is σ = 36680121956864. Its totient is φ = 7098880340160.

The previous prime is 16564635247177. The next prime is 16564635247241. The reversal of 16564635247216 is 61274253646561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630301 + ... + 5790211.

Almost surely, 2^{16564635247216} is an apocalyptic number.

16564635247216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16564635247216 is an abundant number, since it is smaller than the sum of its proper divisors (20115486709648).

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

16564635247216 is a wasteful number, since it uses less digits than its factorization.

16564635247216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188589 (or 5188583 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 58.

The spelling of 16564635247216 in words is "sixteen trillion, five hundred sixty-four billion, six hundred thirty-five million, two hundred forty-seven thousand, two hundred sixteen".