19766164672 has 28 divisors (see below), whose sum is σ = 40928854896. Its totient is φ = 9453382400.

The previous prime is 19766164669. The next prime is 19766164699. The reversal of 19766164672 is 27646166791.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6712579 + ... + 6715522.

Almost surely, 2^19766164672 is an apocalyptic number.

It is an amenable number.

19766164672 is an abundant number, since it is smaller than the sum of its proper divisors (21162690224).

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

19766164672 is a wasteful number, since it uses less digits than its factorization.

19766164672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13428136 (or 13428126 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 55.

The spelling of 19766164672 in words is "nineteen billion, seven hundred sixty-six million, one hundred sixty-four thousand, six hundred seventy-two".