129617293613 has 2 divisors, whose sum is σ = 129617293614. Its totient is φ = 129617293612.

The previous prime is 129617293601. The next prime is 129617293643. The reversal of 129617293613 is 316392716921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79119563524 + 50497730089 = 281282^2 + 224717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129617293613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129617293643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64808646806 + 64808646807.

It is an arithmetic number, because the mean of its divisors is an integer number (64808646807).

Almost surely, 2^129617293613 is an apocalyptic number.

It is an amenable number.

129617293613 is a deficient number, since it is larger than the sum of its proper divisors (1).

129617293613 is an equidigital number, since it uses as much as digits as its factorization.

129617293613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The spelling of 129617293613 in words is "one hundred twenty-nine billion, six hundred seventeen million, two hundred ninety-three thousand, six hundred thirteen".