19936768312 has 32 divisors (see below), whose sum is σ = 38403385200. Its totient is φ = 9696029184.

The previous prime is 19936768297. The next prime is 19936768321. The reversal of 19936768312 is 21386763991.

It is a congruent number.

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, 1217008 + ... + 1233280.

Almost surely, 2^19936768312 is an apocalyptic number.

It is an amenable number.

19936768312 is a deficient number, since it is larger than the sum of its proper divisors (18466616888).

19936768312 is a wasteful number, since it uses less digits than its factorization.

19936768312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20455 (or 20451 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 55.

The spelling of 19936768312 in words is "nineteen billion, nine hundred thirty-six million, seven hundred sixty-eight thousand, three hundred twelve".