129428808960 has 576 divisors, whose sum is σ = 474705100800. Its totient is φ = 29747773440.

The previous prime is 129428808953. The next prime is 129428808989. The reversal of 129428808960 is 69808824921.

It is a self number, because there is not a number n which added to its sum of digits gives 129428808960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123382516 + ... + 123383564.

It is an arithmetic number, because the mean of its divisors is an integer number (824140800).

Almost surely, 2^129428808960 is an apocalyptic number.

129428808960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129428808960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237352550400).

129428808960 is an abundant number, since it is smaller than the sum of its proper divisors (345276291840).

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

129428808960 is a wasteful number, since it uses less digits than its factorization.

129428808960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 129428808960 in words is "one hundred twenty-nine billion, four hundred twenty-eight million, eight hundred eight thousand, nine hundred sixty".