12513222577 has 2 divisors, whose sum is σ = 12513222578. Its totient is φ = 12513222576.

The previous prime is 12513222479. The next prime is 12513222587. The reversal of 12513222577 is 77522231521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10791885456 + 1721337121 = 103884^2 + 41489^2 .

It is a cyclic number.

It is not a de Polignac number, because 12513222577 - 2¹¹ = 12513220529 is a prime.

It is not a weakly prime, because it can be changed into another prime (12513222587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256611288 + 6256611289.

It is an arithmetic number, because the mean of its divisors is an integer number (6256611289).

Almost surely, 2^12513222577 is an apocalyptic number.

It is an amenable number.

12513222577 is a deficient number, since it is larger than the sum of its proper divisors (1).

12513222577 is an equidigital number, since it uses as much as digits as its factorization.

12513222577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 37.

The spelling of 12513222577 in words is "twelve billion, five hundred thirteen million, two hundred twenty-two thousand, five hundred seventy-seven".