129817327204 has 12 divisors (see below), whose sum is σ = 227823895404. Its totient is φ = 64724785664.

The previous prime is 129817327181. The next prime is 129817327219. The reversal of 129817327204 is 402723718921.

It can be written as a sum of positive squares in 2 ways, for example, as 44015200804 + 85802126400 = 209798^2 + 292920^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45967897 + ... + 45970720.

It is an arithmetic number, because the mean of its divisors is an integer number (18985324617).

Almost surely, 2^129817327204 is an apocalyptic number.

It is an amenable number.

129817327204 is a deficient number, since it is larger than the sum of its proper divisors (98006568200).

129817327204 is a wasteful number, since it uses less digits than its factorization.

129817327204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91938974 (or 91938972 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 129817327204 in words is "one hundred twenty-nine billion, eight hundred seventeen million, three hundred twenty-seven thousand, two hundred four".