129343804500 has 144 divisors (see below), whose sum is σ = 387110138688. Its totient is φ = 33558940800.

The previous prime is 129343804489. The next prime is 129343804523. The reversal of 129343804500 is 5408343921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2022007 + ... + 2084993.

It is an arithmetic number, because the mean of its divisors is an integer number (2688264852).

Almost surely, 2^129343804500 is an apocalyptic number.

129343804500 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 129343804500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193555069344).

129343804500 is an abundant number, since it is smaller than the sum of its proper divisors (257766334188).

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

129343804500 is a wasteful number, since it uses less digits than its factorization.

129343804500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63083 (or 63034 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 129343804500 in words is "one hundred twenty-nine billion, three hundred forty-three million, eight hundred four thousand, five hundred".