128112013872 has 60 divisors (see below), whose sum is σ = 379626048360. Its totient is φ = 40192003584.

The previous prime is 128112013871. The next prime is 128112013873. The reversal of 128112013872 is 278310211821.

It is an interprime number because it is at equal distance from previous prime (128112013871) and next prime (128112013873).

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

It is not an unprimeable number, because it can be changed into a prime (128112013871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26164222 + ... + 26169117.

It is an arithmetic number, because the mean of its divisors is an integer number (6327100806).

Almost surely, 2^128112013872 is an apocalyptic number.

128112013872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128112013872 is an abundant number, since it is smaller than the sum of its proper divisors (251514034488).

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

128112013872 is a wasteful number, since it uses less digits than its factorization.

128112013872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52333370 (or 52333361 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 128112013872 in words is "one hundred twenty-eight billion, one hundred twelve million, thirteen thousand, eight hundred seventy-two".