129808084788 has 30 divisors (see below), whose sum is σ = 339343975586. Its totient is φ = 43269361488.

The previous prime is 129808084753. The next prime is 129808084801. The reversal of 129808084788 is 887480808921.

129808084788 is a `hidden beast` number, since 1 + 2 + 9 + 80 + 80 + 8 + 478 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 92198464164 + 37609620624 = 303642^2 + 193932^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 200320795 + ... + 200321442.

Almost surely, 2^129808084788 is an apocalyptic number.

129808084788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129808084788 is an abundant number, since it is smaller than the sum of its proper divisors (209535890798).

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

129808084788 is a wasteful number, since it uses less digits than its factorization.

129808084788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400642253 (or 400642242 counting only the distinct ones).

The product of its (nonzero) digits is 16515072, while the sum is 63.

The spelling of 129808084788 in words is "one hundred twenty-nine billion, eight hundred eight million, eighty-four thousand, seven hundred eighty-eight".