129515752013 has 4 divisors (see below), whose sum is σ = 136332370560. Its totient is φ = 122699133468.

The previous prime is 129515751923. The next prime is 129515752031. The reversal of 129515752013 is 310257515921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129515752013 - 2¹⁶ = 129515686477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129515752073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3408309245 + ... + 3408309282.

It is an arithmetic number, because the mean of its divisors is an integer number (34083092640).

Almost surely, 2^129515752013 is an apocalyptic number.

It is an amenable number.

129515752013 is a deficient number, since it is larger than the sum of its proper divisors (6816618547).

129515752013 is an equidigital number, since it uses as much as digits as its factorization.

129515752013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816618546.

The product of its (nonzero) digits is 94500, while the sum is 41.

The spelling of 129515752013 in words is "one hundred twenty-nine billion, five hundred fifteen million, seven hundred fifty-two thousand, thirteen".