12517162549 has 2 divisors, whose sum is σ = 12517162550. Its totient is φ = 12517162548.

The previous prime is 12517162499. The next prime is 12517162573. The reversal of 12517162549 is 94526171521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8515967524 + 4001195025 = 92282^2 + 63255^2 .

It is a cyclic number.

It is not a de Polignac number, because 12517162549 - 2⁷ = 12517162421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12517162579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258581274 + 6258581275.

It is an arithmetic number, because the mean of its divisors is an integer number (6258581275).

Almost surely, 2^12517162549 is an apocalyptic number.

It is an amenable number.

12517162549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517162549 is an equidigital number, since it uses as much as digits as its factorization.

12517162549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The spelling of 12517162549 in words is "twelve billion, five hundred seventeen million, one hundred sixty-two thousand, five hundred forty-nine".