129994605418 has 32 divisors (see below), whose sum is σ = 209024665344. Its totient is φ = 60474915072.

The previous prime is 129994605413. The next prime is 129994605451. The reversal of 129994605418 is 814506499921.

It is not an unprimeable number, because it can be changed into a prime (129994605413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8446146 + ... + 8461522.

It is an arithmetic number, because the mean of its divisors is an integer number (6532020792).

Almost surely, 2^129994605418 is an apocalyptic number.

129994605418 is a deficient number, since it is larger than the sum of its proper divisors (79030059926).

129994605418 is a wasteful number, since it uses less digits than its factorization.

129994605418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20406.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 129994605418 in words is "one hundred twenty-nine billion, nine hundred ninety-four million, six hundred five thousand, four hundred eighteen".