12917445913 has 2 divisors, whose sum is σ = 12917445914. Its totient is φ = 12917445912.

The previous prime is 12917445907. The next prime is 12917445977. The reversal of 12917445913 is 31954471921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12518924544 + 398521369 = 111888^2 + 19963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12917445913 is a prime.

It is not a weakly prime, because it can be changed into another prime (12917445313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458722956 + 6458722957.

It is an arithmetic number, because the mean of its divisors is an integer number (6458722957).

Almost surely, 2^12917445913 is an apocalyptic number.

It is an amenable number.

12917445913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12917445913 is an equidigital number, since it uses as much as digits as its factorization.

12917445913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The spelling of 12917445913 in words is "twelve billion, nine hundred seventeen million, four hundred forty-five thousand, nine hundred thirteen".