129020028264 has 48 divisors (see below), whose sum is σ = 349510842720. Its totient is φ = 42996633120.

The previous prime is 129020028251. The next prime is 129020028283. The reversal of 129020028264 is 462820020921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104479 + ... + 518609.

It is an arithmetic number, because the mean of its divisors is an integer number (7281475890).

Almost surely, 2^129020028264 is an apocalyptic number.

It is an amenable number.

129020028264 is an abundant number, since it is smaller than the sum of its proper divisors (220490814456).

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

129020028264 is a wasteful number, since it uses less digits than its factorization.

129020028264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418470 (or 418463 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 129020028264 in words is "one hundred twenty-nine billion, twenty million, twenty-eight thousand, two hundred sixty-four".