13680981398 has 24 divisors (see below), whose sum is σ = 24517109952. Its totient is φ = 5704809264.

The previous prime is 13680981389. The next prime is 13680981443. The reversal of 13680981398 is 89318908631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1882886 + ... + 1890137.

It is an arithmetic number, because the mean of its divisors is an integer number (1021546248).

Almost surely, 2^13680981398 is an apocalyptic number.

13680981398 is a deficient number, since it is larger than the sum of its proper divisors (10836128554).

13680981398 is a wasteful number, since it uses less digits than its factorization.

13680981398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773076 (or 3773069 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 13680981398 in words is "thirteen billion, six hundred eighty million, nine hundred eighty-one thousand, three hundred ninety-eight".