12415078261 has 2 divisors, whose sum is σ = 12415078262. Its totient is φ = 12415078260.

The previous prime is 12415078219. The next prime is 12415078289. The reversal of 12415078261 is 16287051421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7159698225 + 5255380036 = 84615^2 + 72494^2 .

It is a cyclic number.

It is not a de Polignac number, because 12415078261 - 2²³ = 12406689653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12415078261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12415078201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6207539130 + 6207539131.

It is an arithmetic number, because the mean of its divisors is an integer number (6207539131).

Almost surely, 2^12415078261 is an apocalyptic number.

It is an amenable number.

12415078261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12415078261 is an equidigital number, since it uses as much as digits as its factorization.

12415078261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 12415078261 in words is "twelve billion, four hundred fifteen million, seventy-eight thousand, two hundred sixty-one".