13116526517 has 2 divisors, whose sum is σ = 13116526518. Its totient is φ = 13116526516.

The previous prime is 13116526469. The next prime is 13116526561. The reversal of 13116526517 is 71562561131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12511317316 + 605209201 = 111854^2 + 24601^2 .

It is a cyclic number.

It is not a de Polignac number, because 13116526517 - 2²⁰ = 13115477941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13116526597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6558263258 + 6558263259.

It is an arithmetic number, because the mean of its divisors is an integer number (6558263259).

Almost surely, 2^13116526517 is an apocalyptic number.

It is an amenable number.

13116526517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13116526517 is an equidigital number, since it uses as much as digits as its factorization.

13116526517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 38.

The spelling of 13116526517 in words is "thirteen billion, one hundred sixteen million, five hundred twenty-six thousand, five hundred seventeen".