19680172764 has 24 divisors (see below), whose sum is σ = 52480460928. Its totient is φ = 5622906480.

The previous prime is 19680172703. The next prime is 19680172781. The reversal of 19680172764 is 46727108691.

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, 117143802 + ... + 117143969.

It is an arithmetic number, because the mean of its divisors is an integer number (2186685872).

Almost surely, 2^19680172764 is an apocalyptic number.

19680172764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19680172764 is an abundant number, since it is smaller than the sum of its proper divisors (32800288164).

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

19680172764 is a wasteful number, since it uses less digits than its factorization.

19680172764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234287785 (or 234287783 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 19680172764 in words is "nineteen billion, six hundred eighty million, one hundred seventy-two thousand, seven hundred sixty-four".