129691685162 has 8 divisors (see below), whose sum is σ = 209501952996. Its totient is φ = 59857700832.

The previous prime is 129691685141. The next prime is 129691685209. The reversal of 129691685162 is 261586196921.

It can be written as a sum of positive squares in 2 ways, for example, as 91935697681 + 37755987481 = 303209^2 + 194309^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 129691685098 and 129691685107.

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, 2494070843 + ... + 2494070894.

Almost surely, 2^129691685162 is an apocalyptic number.

129691685162 is a deficient number, since it is larger than the sum of its proper divisors (79810267834).

129691685162 is a wasteful number, since it uses less digits than its factorization.

129691685162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988141752.

The product of its digits is 2799360, while the sum is 56.

The spelling of 129691685162 in words is "one hundred twenty-nine billion, six hundred ninety-one million, six hundred eighty-five thousand, one hundred sixty-two".