129316970891 has 8 divisors (see below), whose sum is σ = 131763192480. Its totient is φ = 126870981952.

The previous prime is 129316970869. The next prime is 129316970927. The reversal of 129316970891 is 198079613921.

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 129316970891 - 2²² = 129312776587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129316970291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1411991 + ... + 1500783.

It is an arithmetic number, because the mean of its divisors is an integer number (16470399060).

Almost surely, 2^129316970891 is an apocalyptic number.

129316970891 is a deficient number, since it is larger than the sum of its proper divisors (2446221589).

129316970891 is an equidigital number, since it uses as much as digits as its factorization.

129316970891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116325.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The spelling of 129316970891 in words is "one hundred twenty-nine billion, three hundred sixteen million, nine hundred seventy thousand, eight hundred ninety-one".