129510130177 has 4 divisors (see below), whose sum is σ = 129544242516. Its totient is φ = 129476017840.

The previous prime is 129510130163. The next prime is 129510130213. The reversal of 129510130177 is 771031015921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 771031015921 = 15427 ⋅49979323.

It can be written as a sum of positive squares in 2 ways, for example, as 49049403841 + 80460726336 = 221471^2 + 283656^2 .

It is a cyclic number.

It is not a de Polignac number, because 129510130177 - 2¹⁹ = 129509605889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129510130147) 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 in 3 ways as a sum of consecutive naturals, for example, 17050474 + ... + 17058067.

It is an arithmetic number, because the mean of its divisors is an integer number (32386060629).

Almost surely, 2^129510130177 is an apocalyptic number.

It is an amenable number.

129510130177 is a deficient number, since it is larger than the sum of its proper divisors (34112339).

129510130177 is an equidigital number, since it uses as much as digits as its factorization.

129510130177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34112338.

The product of its (nonzero) digits is 13230, while the sum is 37.

The spelling of 129510130177 in words is "one hundred twenty-nine billion, five hundred ten million, one hundred thirty thousand, one hundred seventy-seven".