129298523194 has 16 divisors (see below), whose sum is σ = 205382792808. Its totient is φ = 60838566912.

The previous prime is 129298523153. The next prime is 129298523201. The reversal of 129298523194 is 491325892921.

It can be written as a sum of positive squares in 4 ways, for example, as 77876157969 + 51422365225 = 279063^2 + 226765^2 .

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 7 ways as a sum of consecutive naturals, for example, 30034 + ... + 509410.

Almost surely, 2^129298523194 is an apocalyptic number.

129298523194 is a deficient number, since it is larger than the sum of its proper divisors (76084269614).

129298523194 is a wasteful number, since it uses less digits than its factorization.

129298523194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487329.

The product of its digits is 2799360, while the sum is 55.

The spelling of 129298523194 in words is "one hundred twenty-nine billion, two hundred ninety-eight million, five hundred twenty-three thousand, one hundred ninety-four".