19929086056 has 32 divisors (see below), whose sum is σ = 42169701600. Its totient is φ = 8746306240.

The previous prime is 19929086053. The next prime is 19929086071. The reversal of 19929086056 is 65068092991.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19929085988 and 19929086006.

It is not an unprimeable number, because it can be changed into a prime (19929086053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3902050 + ... + 3907153.

It is an arithmetic number, because the mean of its divisors is an integer number (1317803175).

Almost surely, 2^19929086056 is an apocalyptic number.

It is an amenable number.

19929086056 is an abundant number, since it is smaller than the sum of its proper divisors (22240615544).

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

19929086056 is a wasteful number, since it uses less digits than its factorization.

19929086056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809249 (or 7809245 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 19929086056 in words is "nineteen billion, nine hundred twenty-nine million, eighty-six thousand, fifty-six".