128843105814 has 64 divisors (see below), whose sum is σ = 293166086400. Its totient is φ = 41921784576.

The previous prime is 128843105759. The next prime is 128843105821. The reversal of 128843105814 is 418501348821.

128843105814 is a `hidden beast` number, since 1 + 28 + 8 + 43 + 1 + 0 + 581 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 128843105814.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 3742182 + ... + 3776454.

It is an arithmetic number, because the mean of its divisors is an integer number (4580720100).

Almost surely, 2^128843105814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128843105814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146583043200).

128843105814 is an abundant number, since it is smaller than the sum of its proper divisors (164322980586).

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

128843105814 is a wasteful number, since it uses less digits than its factorization.

128843105814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35946 (or 35940 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 128843105814 in words is "one hundred twenty-eight billion, eight hundred forty-three million, one hundred five thousand, eight hundred fourteen".