129534127993 has 2 divisors, whose sum is σ = 129534127994. Its totient is φ = 129534127992.

The previous prime is 129534127963. The next prime is 129534128011. The reversal of 129534127993 is 399721435921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104900197689 + 24633930304 = 323883^2 + 156952^2 .

It is a cyclic number.

It is not a de Polignac number, because 129534127993 - 2²¹ = 129532030841 is a prime.

It is not a weakly prime, because it can be changed into another prime (129534127903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64767063996 + 64767063997.

It is an arithmetic number, because the mean of its divisors is an integer number (64767063997).

Almost surely, 2^129534127993 is an apocalyptic number.

It is an amenable number.

129534127993 is a deficient number, since it is larger than the sum of its proper divisors (1).

129534127993 is an equidigital number, since it uses as much as digits as its factorization.

129534127993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 55.

The spelling of 129534127993 in words is "one hundred twenty-nine billion, five hundred thirty-four million, one hundred twenty-seven thousand, nine hundred ninety-three".