128089181320 has 32 divisors (see below), whose sum is σ = 300731123520. Its totient is φ = 49008034240.

The previous prime is 128089181281. The next prime is 128089181323. The reversal of 128089181320 is 23181980821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (128089181323) 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, 69612766 + ... + 69614605.

It is an arithmetic number, because the mean of its divisors is an integer number (9397847610).

Almost surely, 2^128089181320 is an apocalyptic number.

128089181320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128089181320 is an abundant number, since it is smaller than the sum of its proper divisors (172641942200).

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

128089181320 is a wasteful number, since it uses less digits than its factorization.

128089181320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139227405 (or 139227401 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 43.

The spelling of 128089181320 in words is "one hundred twenty-eight billion, eighty-nine million, one hundred eighty-one thousand, three hundred twenty".