19957000996 has 24 divisors (see below), whose sum is σ = 35487849600. Its totient is φ = 9818868192.

The previous prime is 19957000981. The next prime is 19957000997. The reversal of 19957000996 is 69900075991.

It is not an unprimeable number, because it can be changed into a prime (19957000997) 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, 92700 + ... + 220243.

It is an arithmetic number, because the mean of its divisors is an integer number (1478660400).

Almost surely, 2^19957000996 is an apocalyptic number.

It is an amenable number.

19957000996 is a deficient number, since it is larger than the sum of its proper divisors (15530848604).

19957000996 is a wasteful number, since it uses less digits than its factorization.

19957000996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313203 (or 313201 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 55.

The spelling of 19957000996 in words is "nineteen billion, nine hundred fifty-seven million, nine hundred ninety-six", and thus it is an aban number.