16568974128 has 40 divisors (see below), whose sum is σ = 48917924608. Its totient is φ = 4733992512.

The previous prime is 16568974091. The next prime is 16568974153. The reversal of 16568974128 is 82147986561.

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, 24655876 + ... + 24656547.

Almost surely, 2^16568974128 is an apocalyptic number.

It is an amenable number.

16568974128 is an abundant number, since it is smaller than the sum of its proper divisors (32348950480).

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

16568974128 is a wasteful number, since it uses less digits than its factorization.

16568974128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49312441 (or 49312435 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The spelling of 16568974128 in words is "sixteen billion, five hundred sixty-eight million, nine hundred seventy-four thousand, one hundred twenty-eight".