19993702768888 has 16 divisors (see below), whose sum is σ = 37489459158360. Its totient is φ = 9996513660000.

The previous prime is 19993702768849. The next prime is 19993702768937. The reversal of 19993702768888 is 88886720739991.

It is a congruent number.

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, 41963863 + ... + 42437638.

Almost surely, 2^{19993702768888} is an apocalyptic number.

It is an amenable number.

19993702768888 is a deficient number, since it is larger than the sum of its proper divisors (17495756389472).

19993702768888 is a wasteful number, since it uses less digits than its factorization.

19993702768888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84431118 (or 84431114 counting only the distinct ones).

The product of its (nonzero) digits is 5267275776, while the sum is 85.

The spelling of 19993702768888 in words is "nineteen trillion, nine hundred ninety-three billion, seven hundred two million, seven hundred sixty-eight thousand, eight hundred eighty-eight".