12713440664 has 32 divisors (see below), whose sum is σ = 25289932800. Its totient is φ = 5974728480.

The previous prime is 12713440651. The next prime is 12713440687. The reversal of 12713440664 is 46604431721.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309992 + ... + 348599.

It is an arithmetic number, because the mean of its divisors is an integer number (790310400).

Almost surely, 2^12713440664 is an apocalyptic number.

It is an amenable number.

12713440664 is a deficient number, since it is larger than the sum of its proper divisors (12576492136).

12713440664 is a wasteful number, since it uses less digits than its factorization.

12713440664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658743 (or 658739 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 12713440664 in words is "twelve billion, seven hundred thirteen million, four hundred forty thousand, six hundred sixty-four".