129618077297 has 2 divisors, whose sum is σ = 129618077298. Its totient is φ = 129618077296.

The previous prime is 129618077291. The next prime is 129618077339. The reversal of 129618077297 is 792770816921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110838389776 + 18779687521 = 332924^2 + 137039^2 .

It is an emirp because it is prime and its reverse (792770816921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129618077297 - 2⁶ = 129618077233 is a prime.

It is not a weakly prime, because it can be changed into another prime (129618077291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64809038648 + 64809038649.

It is an arithmetic number, because the mean of its divisors is an integer number (64809038649).

Almost surely, 2^129618077297 is an apocalyptic number.

It is an amenable number.

129618077297 is a deficient number, since it is larger than the sum of its proper divisors (1).

129618077297 is an equidigital number, since it uses as much as digits as its factorization.

129618077297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 59.

The spelling of 129618077297 in words is "one hundred twenty-nine billion, six hundred eighteen million, seventy-seven thousand, two hundred ninety-seven".