12613636417 has 2 divisors, whose sum is σ = 12613636418. Its totient is φ = 12613636416.

The previous prime is 12613636369. The next prime is 12613636447. The reversal of 12613636417 is 71463631621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12488286001 + 125350416 = 111751^2 + 11196^2 .

It is an emirp because it is prime and its reverse (71463631621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12613636417 is a prime.

It is a super-3 number, since 3×12613636417³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12613636417.

It is not a weakly prime, because it can be changed into another prime (12613636447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6306818208 + 6306818209.

It is an arithmetic number, because the mean of its divisors is an integer number (6306818209).

Almost surely, 2^12613636417 is an apocalyptic number.

It is an amenable number.

12613636417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12613636417 is an equidigital number, since it uses as much as digits as its factorization.

12613636417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The spelling of 12613636417 in words is "twelve billion, six hundred thirteen million, six hundred thirty-six thousand, four hundred seventeen".