129534029105 has 48 divisors (see below), whose sum is σ = 171895808880. Its totient is φ = 93630910464.

The previous prime is 129534029071. The next prime is 129534029113. The reversal of 129534029105 is 501920435921.

It can be written as a sum of positive squares in 24 ways, for example, as 65298647296 + 64235381809 = 255536^2 + 253447^2 .

It is not a de Polignac number, because 129534029105 - 2²⁶ = 129466920241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20463581 + ... + 20469909.

It is an arithmetic number, because the mean of its divisors is an integer number (3581162685).

Almost surely, 2^129534029105 is an apocalyptic number.

It is an amenable number.

129534029105 is a deficient number, since it is larger than the sum of its proper divisors (42361779775).

129534029105 is a wasteful number, since it uses less digits than its factorization.

129534029105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870 (or 6857 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 129534029105 in words is "one hundred twenty-nine billion, five hundred thirty-four million, twenty-nine thousand, one hundred five".