128089181321 has 8 divisors (see below), whose sum is σ = 134868694080. Its totient is φ = 121313466288.

The previous prime is 128089181281. The next prime is 128089181323. The reversal of 128089181321 is 123181980821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128089181321 - 2¹⁸ = 128088919177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128089181323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880061 + ... + 1015226.

It is an arithmetic number, because the mean of its divisors is an integer number (16858586760).

Almost surely, 2^128089181321 is an apocalyptic number.

It is an amenable number.

128089181321 is a deficient number, since it is larger than the sum of its proper divisors (6779512759).

128089181321 is a wasteful number, since it uses less digits than its factorization.

128089181321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898863.

The product of its (nonzero) digits is 55296, while the sum is 44.

The spelling of 128089181321 in words is "one hundred twenty-eight billion, eighty-nine million, one hundred eighty-one thousand, three hundred twenty-one".