129471009906865 has 16 divisors (see below), whose sum is σ = 169514391223296. Its totient is φ = 94146807164800.

The previous prime is 129471009906857. The next prime is 129471009906919. The reversal of 129471009906865 is 568609900174921.

It is not a de Polignac number, because 129471009906865 - 2³ = 129471009906857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129471009906865.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173716177 + ... + 174459886.

It is an arithmetic number, because the mean of its divisors is an integer number (10594649451456).

Almost surely, 2^{129471009906865} is an apocalyptic number.

It is an amenable number.

129471009906865 is a deficient number, since it is larger than the sum of its proper divisors (40043381316431).

129471009906865 is a wasteful number, since it uses less digits than its factorization.

129471009906865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348182840.

The product of its (nonzero) digits is 58786560, while the sum is 67.

The spelling of 129471009906865 in words is "one hundred twenty-nine trillion, four hundred seventy-one billion, nine million, nine hundred six thousand, eight hundred sixty-five".