16564001564432 has 40 divisors (see below), whose sum is σ = 36678058037376. Its totient is φ = 7098736651776.

The previous prime is 16564001564339. The next prime is 16564001564507. The reversal of 16564001564432 is 23446510046561.

16564001564432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16564001564432² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5489813 + ... + 7953995.

Almost surely, 2^{16564001564432} is an apocalyptic number.

It is an amenable number.

16564001564432 is an abundant number, since it is smaller than the sum of its proper divisors (20114056472944).

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

16564001564432 is a wasteful number, since it uses less digits than its factorization.

16564001564432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524215 (or 2524209 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 16564001564432 in words is "sixteen trillion, five hundred sixty-four billion, one million, five hundred sixty-four thousand, four hundred thirty-two".