19716608920 has 32 divisors (see below), whose sum is σ = 44376106320. Its totient is φ = 7884201600.

The previous prime is 19716608893. The next prime is 19716608953. The reversal of 19716608920 is 2980661791.

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, 57379 + ... + 206701.

Almost surely, 2^19716608920 is an apocalyptic number.

19716608920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19716608920 is an abundant number, since it is smaller than the sum of its proper divisors (24659497400).

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

19716608920 is a wasteful number, since it uses less digits than its factorization.

19716608920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152635 (or 152631 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 19716608920 in words is "nineteen billion, seven hundred sixteen million, six hundred eight thousand, nine hundred twenty".