19615379912 has 16 divisors (see below), whose sum is σ = 36984308400. Its totient is φ = 9752897680.

The previous prime is 19615379887. The next prime is 19615379933. The reversal of 19615379912 is 21997351691.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6847514 + ... + 6850377.

It is an arithmetic number, because the mean of its divisors is an integer number (2311519275).

Almost surely, 2^19615379912 is an apocalyptic number.

It is an amenable number.

19615379912 is a deficient number, since it is larger than the sum of its proper divisors (17368928488).

19615379912 is a wasteful number, since it uses less digits than its factorization.

19615379912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13698076 (or 13698072 counting only the distinct ones).

The product of its digits is 918540, while the sum is 53.

The spelling of 19615379912 in words is "nineteen billion, six hundred fifteen million, three hundred seventy-nine thousand, nine hundred twelve".