19765885986 has 48 divisors (see below), whose sum is σ = 53393565888. Its totient is φ = 5133996000.

The previous prime is 19765885973. The next prime is 19765886011. The reversal of 19765885986 is 68958856791.

19765885986 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7129165 + ... + 7131936.

It is an arithmetic number, because the mean of its divisors is an integer number (1112365956).

Almost surely, 2^19765885986 is an apocalyptic number.

19765885986 is an abundant number, since it is smaller than the sum of its proper divisors (33627679902).

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

19765885986 is a wasteful number, since it uses less digits than its factorization.

19765885986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14261127 (or 14261124 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 72.

The spelling of 19765885986 in words is "nineteen billion, seven hundred sixty-five million, eight hundred eighty-five thousand, nine hundred eighty-six".