12634327217 has 2 divisors, whose sum is σ = 12634327218. Its totient is φ = 12634327216.

The previous prime is 12634327193. The next prime is 12634327337. The reversal of 12634327217 is 71272343621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10576888336 + 2057438881 = 102844^2 + 45359^2 .

It is a cyclic number.

It is not a de Polignac number, because 12634327217 - 2⁸ = 12634326961 is a prime.

It is not a weakly prime, because it can be changed into another prime (12634327117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6317163608 + 6317163609.

It is an arithmetic number, because the mean of its divisors is an integer number (6317163609).

Almost surely, 2^12634327217 is an apocalyptic number.

It is an amenable number.

12634327217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12634327217 is an equidigital number, since it uses as much as digits as its factorization.

12634327217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The spelling of 12634327217 in words is "twelve billion, six hundred thirty-four million, three hundred twenty-seven thousand, two hundred seventeen".