129081512292 has 24 divisors (see below), whose sum is σ = 301301288736. Its totient is φ = 43011300288.

The previous prime is 129081512279. The next prime is 129081512297. The reversal of 129081512292 is 292215180921.

It is not an unprimeable number, because it can be changed into a prime (129081512297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949898 + ... + 2015009.

It is an arithmetic number, because the mean of its divisors is an integer number (12554220364).

Almost surely, 2^129081512292 is an apocalyptic number.

129081512292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129081512292 is an abundant number, since it is smaller than the sum of its proper divisors (172219776444).

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

129081512292 is a wasteful number, since it uses less digits than its factorization.

129081512292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967627 (or 3967625 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 129081512292 in words is "one hundred twenty-nine billion, eighty-one million, five hundred twelve thousand, two hundred ninety-two".