12715445609 has 2 divisors, whose sum is σ = 12715445610. Its totient is φ = 12715445608.

The previous prime is 12715445521. The next prime is 12715445621. The reversal of 12715445609 is 90654451721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12260689984 + 454755625 = 110728^2 + 21325^2 .

It is a cyclic number.

It is not a de Polignac number, because 12715445609 - 2¹² = 12715441513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12715445609.

It is not a weakly prime, because it can be changed into another prime (12715445209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6357722804 + 6357722805.

It is an arithmetic number, because the mean of its divisors is an integer number (6357722805).

Almost surely, 2^12715445609 is an apocalyptic number.

It is an amenable number.

12715445609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12715445609 is an equidigital number, since it uses as much as digits as its factorization.

12715445609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 12715445609 in words is "twelve billion, seven hundred fifteen million, four hundred forty-five thousand, six hundred nine".