129568500100 has 36 divisors (see below), whose sum is σ = 302791620964. Its totient is φ = 47840676480.

The previous prime is 129568500097. The next prime is 129568500121. The reversal of 129568500100 is 1005865921.

It can be written as a sum of positive squares in 6 ways, for example, as 1617984 + 129566882116 = 1272^2 + 359954^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129568500100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49832739 + ... + 49835338.

Almost surely, 2^129568500100 is an apocalyptic number.

129568500100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129568500100 is an abundant number, since it is smaller than the sum of its proper divisors (173223120864).

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

129568500100 is a wasteful number, since it uses less digits than its factorization.

129568500100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99668104 (or 99668097 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 129568500100 in words is "one hundred twenty-nine billion, five hundred sixty-eight million, five hundred thousand, one hundred".