13396657680 has 120 divisors (see below), whose sum is σ = 51417667392. Its totient is φ = 3062092032.

The previous prime is 13396657661. The next prime is 13396657711. The reversal of 13396657680 is 8675669331.

13396657680 is a `hidden beast` number, since 1 + 3 + 3 + 9 + 66 + 576 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1323994 + ... + 1334073.

Almost surely, 2^13396657680 is an apocalyptic number.

13396657680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13396657680 is an abundant number, since it is smaller than the sum of its proper divisors (38021009712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13396657680 is a wasteful number, since it uses less digits than its factorization.

13396657680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658093 (or 2658084 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 13396657680 in words is "thirteen billion, three hundred ninety-six million, six hundred fifty-seven thousand, six hundred eighty".