129413607217 has 2 divisors, whose sum is σ = 129413607218. Its totient is φ = 129413607216.

The previous prime is 129413607181. The next prime is 129413607247. The reversal of 129413607217 is 712706314921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98992666161 + 30420941056 = 314631^2 + 174416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129413607217 is a prime.

It is not a weakly prime, because it can be changed into another prime (129413607247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64706803608 + 64706803609.

It is an arithmetic number, because the mean of its divisors is an integer number (64706803609).

Almost surely, 2^129413607217 is an apocalyptic number.

It is an amenable number.

129413607217 is a deficient number, since it is larger than the sum of its proper divisors (1).

129413607217 is an equidigital number, since it uses as much as digits as its factorization.

129413607217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 129413607217 in words is "one hundred twenty-nine billion, four hundred thirteen million, six hundred seven thousand, two hundred seventeen".