19988299016 has 32 divisors (see below), whose sum is σ = 42838554240. Its totient is φ = 8565116928.

The previous prime is 19988298959. The next prime is 19988299021. The reversal of 19988299016 is 61099288991.

It is a self number, because there is not a number n which added to its sum of digits gives 19988299016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408200 + ... + 454536.

It is an arithmetic number, because the mean of its divisors is an integer number (1338704820).

Almost surely, 2^19988299016 is an apocalyptic number.

It is an amenable number.

19988299016 is an abundant number, since it is smaller than the sum of its proper divisors (22850255224).

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

19988299016 is a wasteful number, since it uses less digits than its factorization.

19988299016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54053 (or 54049 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 62.

The spelling of 19988299016 in words is "nineteen billion, nine hundred eighty-eight million, two hundred ninety-nine thousand, sixteen".