19939163696 has 20 divisors (see below), whose sum is σ = 39265445184. Its totient is φ = 9806145600.

The previous prime is 19939163689. The next prime is 19939163707. The reversal of 19939163696 is 69636193991.

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, 10213760 + ... + 10215711.

Almost surely, 2^19939163696 is an apocalyptic number.

19939163696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19939163696 is a deficient number, since it is larger than the sum of its proper divisors (19326281488).

19939163696 is a wasteful number, since it uses less digits than its factorization.

19939163696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20429540 (or 20429534 counting only the distinct ones).

The product of its digits is 12754584, while the sum is 62.

The spelling of 19939163696 in words is "nineteen billion, nine hundred thirty-nine million, one hundred sixty-three thousand, six hundred ninety-six".