129199385700 has 432 divisors, whose sum is σ = 515650996224. Its totient is φ = 26274758400.

The previous prime is 129199385681. The next prime is 129199385713. The reversal of 129199385700 is 7583991921.

129199385700 is a `hidden beast` number, since 1 + 2 + 9 + 199 + 385 + 70 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3237267 + ... + 3276933.

Almost surely, 2^129199385700 is an apocalyptic number.

129199385700 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 129199385700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257825498112).

129199385700 is an abundant number, since it is smaller than the sum of its proper divisors (386451610524).

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

129199385700 is a wasteful number, since it uses less digits than its factorization.

129199385700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39752 (or 39742 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The spelling of 129199385700 in words is "one hundred twenty-nine billion, one hundred ninety-nine million, three hundred eighty-five thousand, seven hundred".