129515752051 has 16 divisors (see below), whose sum is σ = 155830982400. Its totient is φ = 105155458848.

The previous prime is 129515752039. The next prime is 129515752057. The reversal of 129515752051 is 150257515921.

It is a cyclic number.

It is not a de Polignac number, because 129515752051 - 2⁷ = 129515751923 is a prime.

It is a super-2 number, since 2×129515752051² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129515751989 and 129515752007.

It is not an unprimeable number, because it can be changed into a prime (129515752057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901785 + ... + 1035493.

It is an arithmetic number, because the mean of its divisors is an integer number (9739436400).

Almost surely, 2^129515752051 is an apocalyptic number.

129515752051 is a deficient number, since it is larger than the sum of its proper divisors (26315230349).

129515752051 is a wasteful number, since it uses less digits than its factorization.

129515752051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141018.

The product of its (nonzero) digits is 157500, while the sum is 43.

The spelling of 129515752051 in words is "one hundred twenty-nine billion, five hundred fifteen million, seven hundred fifty-two thousand, fifty-one".