12515027617 has 2 divisors, whose sum is σ = 12515027618. Its totient is φ = 12515027616.

The previous prime is 12515027461. The next prime is 12515027647. The reversal of 12515027617 is 71672051521.

12515027617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7818803776 + 4696223841 = 88424^2 + 68529^2 .

It is a cyclic number.

It is not a de Polignac number, because 12515027617 - 2³¹ = 10367543969 is a prime.

It is not a weakly prime, because it can be changed into another prime (12515027647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257513808 + 6257513809.

It is an arithmetic number, because the mean of its divisors is an integer number (6257513809).

Almost surely, 2^12515027617 is an apocalyptic number.

It is an amenable number.

12515027617 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515027617 is an equidigital number, since it uses as much as digits as its factorization.

12515027617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 12515027617 in words is "twelve billion, five hundred fifteen million, twenty-seven thousand, six hundred seventeen".