129461173899 has 8 divisors (see below), whose sum is σ = 172625221632. Its totient is φ = 86302287720.

The previous prime is 129461173889. The next prime is 129461173913. The reversal of 129461173899 is 998371164921.

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

It is not a de Polignac number, because 129461173899 - 2⁴ = 129461173883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129461173889) 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, 1231479 + ... + 1332464.

It is an arithmetic number, because the mean of its divisors is an integer number (21578152704).

Almost surely, 2^129461173899 is an apocalyptic number.

129461173899 is a deficient number, since it is larger than the sum of its proper divisors (43164047733).

129461173899 is a wasteful number, since it uses less digits than its factorization.

129461173899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580777.

The product of its digits is 5878656, while the sum is 60.

The spelling of 129461173899 in words is "one hundred twenty-nine billion, four hundred sixty-one million, one hundred seventy-three thousand, eight hundred ninety-nine".