129047998912 has 112 divisors (see below), whose sum is σ = 302638602240. Its totient is φ = 53452219392.

The previous prime is 129047998909. The next prime is 129047998927. The reversal of 129047998912 is 219899740921.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1550289 + ... + 1631407.

Almost surely, 2^129047998912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129047998912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151319301120).

129047998912 is an abundant number, since it is smaller than the sum of its proper divisors (173590603328).

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

129047998912 is an equidigital number, since it uses as much as digits as its factorization.

129047998912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81258 (or 81248 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 61.

The spelling of 129047998912 in words is "one hundred twenty-nine billion, forty-seven million, nine hundred ninety-eight thousand, nine hundred twelve".