12615734217 has 8 divisors (see below), whose sum is σ = 16836042496. Its totient is φ = 8402957712.

The previous prime is 12615734207. The next prime is 12615734231. The reversal of 12615734217 is 71243751621.

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

It is not a de Polignac number, because 12615734217 - 2²⁰ = 12614685641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12615734207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1879033 + ... + 1885734.

It is an arithmetic number, because the mean of its divisors is an integer number (2104505312).

Almost surely, 2^12615734217 is an apocalyptic number.

It is an amenable number.

12615734217 is a deficient number, since it is larger than the sum of its proper divisors (4220308279).

12615734217 is a wasteful number, since it uses less digits than its factorization.

12615734217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765887.

The product of its digits is 70560, while the sum is 39.

The spelling of 12615734217 in words is "twelve billion, six hundred fifteen million, seven hundred thirty-four thousand, two hundred seventeen".