128163081588 has 24 divisors (see below), whose sum is σ = 299463131520. Its totient is φ = 42661607040.

The previous prime is 128163081587. The next prime is 128163081623. The reversal of 128163081588 is 885180361821.

It is a self number, because there is not a number n which added to its sum of digits gives 128163081588.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128163081587) by changing a digit.

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, 7418533 + ... + 7435788.

It is an arithmetic number, because the mean of its divisors is an integer number (12477630480).

Almost surely, 2^128163081588 is an apocalyptic number.

It is an amenable number.

128163081588 is an abundant number, since it is smaller than the sum of its proper divisors (171300049932).

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

128163081588 is a wasteful number, since it uses less digits than its factorization.

128163081588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14855047 (or 14855045 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 51.

The spelling of 128163081588 in words is "one hundred twenty-eight billion, one hundred sixty-three million, eighty-one thousand, five hundred eighty-eight".