129398804496 has 60 divisors (see below), whose sum is σ = 389993624748. Its totient is φ = 39815016192.

The previous prime is 129398804453. The next prime is 129398804531. The reversal of 129398804496 is 694408893921.

129398804496 is a `hidden beast` number, since 1 + 29 + 3 + 98 + 80 + 449 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60681424896 + 68717379600 = 246336^2 + 262140^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34559775 + ... + 34563518.

Almost surely, 2^129398804496 is an apocalyptic number.

129398804496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129398804496 is an abundant number, since it is smaller than the sum of its proper divisors (260594820252).

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

129398804496 is a wasteful number, since it uses less digits than its factorization.

129398804496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69123320 (or 69123311 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 129398804496 in words is "one hundred twenty-nine billion, three hundred ninety-eight million, eight hundred four thousand, four hundred ninety-six".