129706920000 has 2100 divisors, whose sum is σ = 602001610320. Its totient is φ = 27433728000.

The previous prime is 129706919911. The next prime is 129706920001. The reversal of 129706920000 is 29607921.

It is a tau number, because it is divible by the number of its divisors (2100).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (129706920001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 299 ways as a sum of consecutive naturals, for example, 3016439979 + ... + 3016440021.

Almost surely, 2^129706920000 is an apocalyptic number.

129706920000 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 129706920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301000805160).

129706920000 is an abundant number, since it is smaller than the sum of its proper divisors (472294690320).

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

129706920000 is an equidigital number, since it uses as much as digits as its factorization.

129706920000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 129706920000 in words is "one hundred twenty-nine billion, seven hundred six million, nine hundred twenty thousand".