129020179379 has 8 divisors (see below), whose sum is σ = 158794067040. Its totient is φ = 102081900096.

The previous prime is 129020179349. The next prime is 129020179381. The reversal of 129020179379 is 973971020921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129020179379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129020179319) 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, 708901994 + ... + 708902175.

It is an arithmetic number, because the mean of its divisors is an integer number (19849258380).

Almost surely, 2^129020179379 is an apocalyptic number.

129020179379 is a deficient number, since it is larger than the sum of its proper divisors (29773887661).

129020179379 is a wasteful number, since it uses less digits than its factorization.

129020179379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417804189.

The product of its (nonzero) digits is 428652, while the sum is 50.

The spelling of 129020179379 in words is "one hundred twenty-nine billion, twenty million, one hundred seventy-nine thousand, three hundred seventy-nine".