16564112431552 has 42 divisors (see below), whose sum is σ = 38235844998312. Its totient is φ = 7098905326464.

The previous prime is 16564112431519. The next prime is 16564112431577. The reversal of 16564112431552 is 25513421146561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2640958668 + ... + 2640964939.

Almost surely, 2^{16564112431552} is an apocalyptic number.

It is an amenable number.

16564112431552 is an abundant number, since it is smaller than the sum of its proper divisors (21671732566760).

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

16564112431552 is an equidigital number, since it uses as much as digits as its factorization.

16564112431552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281923633 (or 5281923616 counting only the distinct ones).

The product of its digits is 864000, while the sum is 46.

The spelling of 16564112431552 in words is "sixteen trillion, five hundred sixty-four billion, one hundred twelve million, four hundred thirty-one thousand, five hundred fifty-two".