129008421888000 has 1792 divisors, whose sum is σ = 457532051558400. Its totient is φ = 32230814515200.

The previous prime is 129008421887999. The next prime is 129008421888053. The reversal of 129008421888000 is 888124800921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 539784191881 + ... + 539784192119.

It is an arithmetic number, because the mean of its divisors is an integer number (255319225200).

Almost surely, 2^{129008421888000} is an apocalyptic number.

129008421888000 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 129008421888000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228766025779200).

129008421888000 is an abundant number, since it is smaller than the sum of its proper divisors (328523629670400).

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

129008421888000 is an equidigital number, since it uses as much as digits as its factorization.

129008421888000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 51.

The spelling of 129008421888000 in words is "one hundred twenty-nine trillion, eight billion, four hundred twenty-one million, eight hundred eighty-eight thousand".