13217297915 has 16 divisors (see below), whose sum is σ = 16125682176. Its totient is φ = 10397328000.

The previous prime is 13217297909. The next prime is 13217297963. The reversal of 13217297915 is 51979271231.

It is not a de Polignac number, because 13217297915 - 2⁶ = 13217297851 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 13217297915.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1857254 + ... + 1864356.

It is an arithmetic number, because the mean of its divisors is an integer number (1007855136).

Almost surely, 2^13217297915 is an apocalyptic number.

13217297915 is a deficient number, since it is larger than the sum of its proper divisors (2908384261).

13217297915 is an equidigital number, since it uses as much as digits as its factorization.

13217297915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13270.

The product of its digits is 238140, while the sum is 47.

The spelling of 13217297915 in words is "thirteen billion, two hundred seventeen million, two hundred ninety-seven thousand, nine hundred fifteen".