129524734517 has 2 divisors, whose sum is σ = 129524734518. Its totient is φ = 129524734516.

The previous prime is 129524734489. The next prime is 129524734519. The reversal of 129524734517 is 715437425921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65967299281 + 63557435236 = 256841^2 + 252106^2 .

It is a cyclic number.

It is not a de Polignac number, because 129524734517 - 2¹⁴ = 129524718133 is a prime.

Together with 129524734519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129524734519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64762367258 + 64762367259.

It is an arithmetic number, because the mean of its divisors is an integer number (64762367259).

Almost surely, 2^129524734517 is an apocalyptic number.

It is an amenable number.

129524734517 is a deficient number, since it is larger than the sum of its proper divisors (1).

129524734517 is an equidigital number, since it uses as much as digits as its factorization.

129524734517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 50.

The spelling of 129524734517 in words is "one hundred twenty-nine billion, five hundred twenty-four million, seven hundred thirty-four thousand, five hundred seventeen".