129689318399 has 8 divisors (see below), whose sum is σ = 129942839040. Its totient is φ = 129436024536.

The previous prime is 129689318393. The next prime is 129689318401. The reversal of 129689318399 is 993813986921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129689318399 - 2¹⁶ = 129689252863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129689318393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1111562 + ... + 1222680.

It is an arithmetic number, because the mean of its divisors is an integer number (16242854880).

Almost surely, 2^129689318399 is an apocalyptic number.

129689318399 is a deficient number, since it is larger than the sum of its proper divisors (253520641).

129689318399 is a wasteful number, since it uses less digits than its factorization.

129689318399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113389.

The product of its digits is 45349632, while the sum is 68.

The spelling of 129689318399 in words is "one hundred twenty-nine billion, six hundred eighty-nine million, three hundred eighteen thousand, three hundred ninety-nine".