128596828444 has 48 divisors (see below), whose sum is σ = 258733440000. Its totient is φ = 54783222336.

The previous prime is 128596828411. The next prime is 128596828471. The reversal of 128596828444 is 444828695821.

It is a happy number.

It is a super-2 number, since 2×128596828444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 22365682 + ... + 22371430.

It is an arithmetic number, because the mean of its divisors is an integer number (5390280000).

Almost surely, 2^128596828444 is an apocalyptic number.

128596828444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128596828444 is an abundant number, since it is smaller than the sum of its proper divisors (130136611556).

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

128596828444 is a wasteful number, since it uses less digits than its factorization.

128596828444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10402 (or 10400 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 61.

The spelling of 128596828444 in words is "one hundred twenty-eight billion, five hundred ninety-six million, eight hundred twenty-eight thousand, four hundred forty-four".