129539129896 has 16 divisors (see below), whose sum is σ = 264966402240. Its totient is φ = 58881422640.

The previous prime is 129539129891. The next prime is 129539129897. The reversal of 129539129896 is 698921935921.

It is not an unprimeable number, because it can be changed into a prime (129539129891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736017696 + ... + 736017871.

It is an arithmetic number, because the mean of its divisors is an integer number (16560400140).

Almost surely, 2^129539129896 is an apocalyptic number.

It is an amenable number.

129539129896 is an abundant number, since it is smaller than the sum of its proper divisors (135427272344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129539129896 is a wasteful number, since it uses less digits than its factorization.

129539129896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472035584 (or 1472035580 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 64.

The spelling of 129539129896 in words is "one hundred twenty-nine billion, five hundred thirty-nine million, one hundred twenty-nine thousand, eight hundred ninety-six".