12615238193 has 2 divisors, whose sum is σ = 12615238194. Its totient is φ = 12615238192.

The previous prime is 12615238123. The next prime is 12615238199. The reversal of 12615238193 is 39183251621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10651684849 + 1963553344 = 103207^2 + 44312^2 .

It is a cyclic number.

It is not a de Polignac number, because 12615238193 - 2⁸ = 12615237937 is a prime.

It is a super-2 number, since 2×12615238193² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12615238193.

It is not a weakly prime, because it can be changed into another prime (12615238199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6307619096 + 6307619097.

It is an arithmetic number, because the mean of its divisors is an integer number (6307619097).

Almost surely, 2^12615238193 is an apocalyptic number.

It is an amenable number.

12615238193 is a deficient number, since it is larger than the sum of its proper divisors (1).

12615238193 is an equidigital number, since it uses as much as digits as its factorization.

12615238193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The spelling of 12615238193 in words is "twelve billion, six hundred fifteen million, two hundred thirty-eight thousand, one hundred ninety-three".