13015394768 has 20 divisors (see below), whose sum is σ = 25462159008. Its totient is φ = 6444515040.

The previous prime is 13015394713. The next prime is 13015394779. The reversal of 13015394768 is 86749351031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3947198 + ... + 3950493.

Almost surely, 2^13015394768 is an apocalyptic number.

It is an amenable number.

13015394768 is a deficient number, since it is larger than the sum of its proper divisors (12446764240).

13015394768 is a wasteful number, since it uses less digits than its factorization.

13015394768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897802 (or 7897796 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 13015394768 in words is "thirteen billion, fifteen million, three hundred ninety-four thousand, seven hundred sixty-eight".