129300475850 has 48 divisors (see below), whose sum is σ = 295998638208. Its totient is φ = 40921467840.

The previous prime is 129300475849. The next prime is 129300475859. The reversal of 129300475850 is 58574003921.

It is a super-2 number, since 2×129300475850² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129300475859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14204294 + ... + 14213393.

It is an arithmetic number, because the mean of its divisors is an integer number (6166638296).

Almost surely, 2^129300475850 is an apocalyptic number.

129300475850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129300475850 is an abundant number, since it is smaller than the sum of its proper divisors (166698162358).

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

129300475850 is a wasteful number, since it uses less digits than its factorization.

129300475850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28417719 (or 28417714 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 129300475850 in words is "one hundred twenty-nine billion, three hundred million, four hundred seventy-five thousand, eight hundred fifty".