13680729964 has 18 divisors (see below), whose sum is σ = 26315619932. Its totient is φ = 6218513400.

The previous prime is 13680729949. The next prime is 13680729971. The reversal of 13680729964 is 46992708631.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14132502 + ... + 14133469.

Almost surely, 2^13680729964 is an apocalyptic number.

It is an amenable number.

13680729964 is a deficient number, since it is larger than the sum of its proper divisors (12634889968).

13680729964 is a wasteful number, since it uses less digits than its factorization.

13680729964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28265997 (or 28265984 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 13680729964 in words is "thirteen billion, six hundred eighty million, seven hundred twenty-nine thousand, nine hundred sixty-four".