129252603052829 has 2 divisors, whose sum is σ = 129252603052830. Its totient is φ = 129252603052828.

The previous prime is 129252603052693. The next prime is 129252603052871. The reversal of 129252603052829 is 928250306252921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89451304936900 + 39801298115929 = 9457870^2 + 6308827^2 .

It is a cyclic number.

It is not a de Polignac number, because 129252603052829 - 2³⁶ = 129183883576093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129252603051829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64626301526414 + 64626301526415.

It is an arithmetic number, because the mean of its divisors is an integer number (64626301526415).

Almost surely, 2^{129252603052829} is an apocalyptic number.

It is an amenable number.

129252603052829 is a deficient number, since it is larger than the sum of its proper divisors (1).

129252603052829 is an equidigital number, since it uses as much as digits as its factorization.

129252603052829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 129252603052829 in words is "one hundred twenty-nine trillion, two hundred fifty-two billion, six hundred three million, fifty-two thousand, eight hundred twenty-nine".