128869889323 has 32 divisors (see below), whose sum is σ = 154067443200. Its totient is φ = 105458406144.

The previous prime is 128869889263. The next prime is 128869889329. The reversal of 128869889323 is 323988968821.

It is a de Polignac number, because none of the positive numbers 2^k-128869889323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128869889329) 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 31 ways as a sum of consecutive naturals, for example, 12354036 + ... + 12364462.

It is an arithmetic number, because the mean of its divisors is an integer number (4814607600).

Almost surely, 2^128869889323 is an apocalyptic number.

128869889323 is a deficient number, since it is larger than the sum of its proper divisors (25197553877).

128869889323 is a wasteful number, since it uses less digits than its factorization.

128869889323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11139.

The product of its digits is 71663616, while the sum is 67.

The spelling of 128869889323 in words is "one hundred twenty-eight billion, eight hundred sixty-nine million, eight hundred eighty-nine thousand, three hundred twenty-three".