129290795135 has 4 divisors (see below), whose sum is σ = 155148954168. Its totient is φ = 103432636104.

The previous prime is 129290795087. The next prime is 129290795191. The reversal of 129290795135 is 531597092921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531597092921 = 59 ⋅9010120219.

It is a cyclic number.

It is not a de Polignac number, because 129290795135 - 2⁸ = 129290794879 is a prime.

It is a super-2 number, since 2×129290795135² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12929079509 + ... + 12929079518.

It is an arithmetic number, because the mean of its divisors is an integer number (38787238542).

Almost surely, 2^129290795135 is an apocalyptic number.

129290795135 is a deficient number, since it is larger than the sum of its proper divisors (25858159033).

129290795135 is an equidigital number, since it uses as much as digits as its factorization.

129290795135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25858159032.

The product of its (nonzero) digits is 1530900, while the sum is 53.

The spelling of 129290795135 in words is "one hundred twenty-nine billion, two hundred ninety million, seven hundred ninety-five thousand, one hundred thirty-five".