128008812844 has 24 divisors (see below), whose sum is σ = 244390297536. Its totient is φ = 58183482000.

The previous prime is 128008812823. The next prime is 128008812887. The reversal of 128008812844 is 448218800821.

It is a junction number, because it is equal to n+sod(n) for n = 128008812794 and 128008812803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533259 + ... + 1614589.

It is an arithmetic number, because the mean of its divisors is an integer number (10182929064).

Almost surely, 2^128008812844 is an apocalyptic number.

It is an amenable number.

128008812844 is a deficient number, since it is larger than the sum of its proper divisors (116381484692).

128008812844 is a wasteful number, since it uses less digits than its factorization.

128008812844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117117 (or 117115 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 46.

The spelling of 128008812844 in words is "one hundred twenty-eight billion, eight million, eight hundred twelve thousand, eight hundred forty-four".