12942811617 has 16 divisors (see below), whose sum is σ = 17672994240. Its totient is φ = 8420916672.

The previous prime is 12942811613. The next prime is 12942811627. The reversal of 12942811617 is 71611824921.

It is not a de Polignac number, because 12942811617 - 2² = 12942811613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12942811613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117723 + ... + 199359.

It is an arithmetic number, because the mean of its divisors is an integer number (1104562140).

Almost surely, 2^12942811617 is an apocalyptic number.

It is an amenable number.

12942811617 is a deficient number, since it is larger than the sum of its proper divisors (4730182623).

12942811617 is a wasteful number, since it uses less digits than its factorization.

12942811617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82912.

The product of its digits is 48384, while the sum is 42.

The spelling of 12942811617 in words is "twelve billion, nine hundred forty-two million, eight hundred eleven thousand, six hundred seventeen".