128012895912 has 32 divisors (see below), whose sum is σ = 349126080480. Its totient is φ = 38791786560.

The previous prime is 128012895911. The next prime is 128012895917. The reversal of 128012895912 is 219598210821.

It is not an unprimeable number, because it can be changed into a prime (128012895911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242448403 + ... + 242448930.

It is an arithmetic number, because the mean of its divisors is an integer number (10910190015).

Almost surely, 2^128012895912 is an apocalyptic number.

128012895912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128012895912 is an abundant number, since it is smaller than the sum of its proper divisors (221113184568).

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

128012895912 is a wasteful number, since it uses less digits than its factorization.

128012895912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484897353 (or 484897349 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 128012895912 in words is "one hundred twenty-eight billion, twelve million, eight hundred ninety-five thousand, nine hundred twelve".