129471009906864 has 80 divisors (see below), whose sum is σ = 345742991191040. Its totient is φ = 41705934877440.

The previous prime is 129471009906857. The next prime is 129471009906919. The reversal of 129471009906864 is 468609900174921.

It is a junction number, because it is equal to n+sod(n) for n = 129471009906795 and 129471009906804.

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, 60306142 + ... + 62416125.

It is an arithmetic number, because the mean of its divisors is an integer number (4321787389888).

Almost surely, 2^{129471009906864} is an apocalyptic number.

It is an amenable number.

129471009906864 is an abundant number, since it is smaller than the sum of its proper divisors (216271981284176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129471009906864 is a wasteful number, since it uses less digits than its factorization.

129471009906864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122723018 (or 122723012 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 129471009906864 in words is "one hundred twenty-nine trillion, four hundred seventy-one billion, nine million, nine hundred six thousand, eight hundred sixty-four".