12726410317 has 2 divisors, whose sum is σ = 12726410318. Its totient is φ = 12726410316.

The previous prime is 12726410309. The next prime is 12726410339. The reversal of 12726410317 is 71301462721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12665476681 + 60933636 = 112541^2 + 7806^2 .

It is a cyclic number.

It is not a de Polignac number, because 12726410317 - 2³ = 12726410309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12726410017) 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, 6363205158 + 6363205159.

It is an arithmetic number, because the mean of its divisors is an integer number (6363205159).

Almost surely, 2^12726410317 is an apocalyptic number.

It is an amenable number.

12726410317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12726410317 is an equidigital number, since it uses as much as digits as its factorization.

12726410317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 12726410317 in words is "twelve billion, seven hundred twenty-six million, four hundred ten thousand, three hundred seventeen".