13688999998 has 12 divisors (see below), whose sum is σ = 21812404032. Its totient is φ = 6441882080.

The previous prime is 13688999971. The next prime is 13689000019. The reversal of 13688999998 is 89999988631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11841118 + ... + 11842273.

It is an arithmetic number, because the mean of its divisors is an integer number (1817700336).

Almost surely, 2^13688999998 is an apocalyptic number.

13688999998 is a deficient number, since it is larger than the sum of its proper divisors (8123404034).

13688999998 is a wasteful number, since it uses less digits than its factorization.

13688999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23683427 (or 23683410 counting only the distinct ones).

The product of its digits is 544195584, while the sum is 79.

The spelling of 13688999998 in words is "thirteen billion, six hundred eighty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-eight".