128405304159 has 32 divisors (see below), whose sum is σ = 189659811840. Its totient is φ = 76619109600.

The previous prime is 128405304127. The next prime is 128405304169. The reversal of 128405304159 is 951403504821.

It is not a de Polignac number, because 128405304159 - 2⁵ = 128405304127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128405304159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128405304169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4431882 + ... + 4460760.

It is an arithmetic number, because the mean of its divisors is an integer number (5926869120).

Almost surely, 2^128405304159 is an apocalyptic number.

128405304159 is a deficient number, since it is larger than the sum of its proper divisors (61254507681).

128405304159 is a wasteful number, since it uses less digits than its factorization.

128405304159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30971.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 128405304159 in words is "one hundred twenty-eight billion, four hundred five million, three hundred four thousand, one hundred fifty-nine".