12739347515 has 8 divisors (see below), whose sum is σ = 15298797408. Its totient is φ = 10183757760.

The previous prime is 12739347469. The next prime is 12739347527. The reversal of 12739347515 is 51574393721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12739347515 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12739347515.

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, 957767 + ... + 970976.

It is an arithmetic number, because the mean of its divisors is an integer number (1912349676).

Almost surely, 2^12739347515 is an apocalyptic number.

12739347515 is a deficient number, since it is larger than the sum of its proper divisors (2559449893).

12739347515 is a wasteful number, since it uses less digits than its factorization.

12739347515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930069.

The product of its digits is 793800, while the sum is 47.

The spelling of 12739347515 in words is "twelve billion, seven hundred thirty-nine million, three hundred forty-seven thousand, five hundred fifteen".