129088920000 has 280 divisors, whose sum is σ = 434872308816. Its totient is φ = 33772544000.

The previous prime is 129088919989. The next prime is 129088920017. The reversal of 129088920000 is 29880921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6349852 + ... + 6370148.

Almost surely, 2^129088920000 is an apocalyptic number.

129088920000 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 129088920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217436154408).

129088920000 is an abundant number, since it is smaller than the sum of its proper divisors (305783388816).

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

129088920000 is an equidigital number, since it uses as much as digits as its factorization.

129088920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385 (or 20360 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 129088920000 in words is "one hundred twenty-nine billion, eighty-eight million, nine hundred twenty thousand".