129684168271 has 12 divisors (see below), whose sum is σ = 151048824888. Its totient is φ = 111016582992.

The previous prime is 129684168253. The next prime is 129684168287. The reversal of 129684168271 is 172861486921.

It is not a de Polignac number, because 129684168271 - 2⁵ = 129684168239 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 (129684168071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1642896 + ... + 1720021.

It is an arithmetic number, because the mean of its divisors is an integer number (12587402074).

Almost surely, 2^129684168271 is an apocalyptic number.

129684168271 is a deficient number, since it is larger than the sum of its proper divisors (21364656617).

129684168271 is an equidigital number, since it uses as much as digits as its factorization.

129684168271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363718 (or 3363711 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The spelling of 129684168271 in words is "one hundred twenty-nine billion, six hundred eighty-four million, one hundred sixty-eight thousand, two hundred seventy-one".