12615365149 has 2 divisors, whose sum is σ = 12615365150. Its totient is φ = 12615365148.

The previous prime is 12615365131. The next prime is 12615365159. The reversal of 12615365149 is 94156351621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12313231225 + 302133924 = 110965^2 + 17382^2 .

It is a cyclic number.

It is not a de Polignac number, because 12615365149 - 2²⁷ = 12481147421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12615365159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6307682574 + 6307682575.

It is an arithmetic number, because the mean of its divisors is an integer number (6307682575).

Almost surely, 2^12615365149 is an apocalyptic number.

It is an amenable number.

12615365149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12615365149 is an equidigital number, since it uses as much as digits as its factorization.

12615365149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The spelling of 12615365149 in words is "twelve billion, six hundred fifteen million, three hundred sixty-five thousand, one hundred forty-nine".