19772983688 has 48 divisors (see below), whose sum is σ = 39679839360. Its totient is φ = 9234136800.

The previous prime is 19772983687. The next prime is 19772983709. The reversal of 19772983688 is 88638927791.

It is not an unprimeable number, because it can be changed into a prime (19772983687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156833 + ... + 253263.

It is an arithmetic number, because the mean of its divisors is an integer number (826663320).

Almost surely, 2^19772983688 is an apocalyptic number.

It is an amenable number.

19772983688 is an abundant number, since it is smaller than the sum of its proper divisors (19906855672).

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

19772983688 is a wasteful number, since it uses less digits than its factorization.

19772983688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96546 (or 96523 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 68.

The spelling of 19772983688 in words is "nineteen billion, seven hundred seventy-two million, nine hundred eighty-three thousand, six hundred eighty-eight".