128324886571243 has 4 divisors (see below), whose sum is σ = 128663474662840. Its totient is φ = 127986298479648.

The previous prime is 128324886571187. The next prime is 128324886571247. The reversal of 128324886571243 is 342175688423821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128324886571243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128324886571247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169294045230 + ... + 169294045987.

It is an arithmetic number, because the mean of its divisors is an integer number (32165868665710).

Almost surely, 2^{128324886571243} is an apocalyptic number.

128324886571243 is a deficient number, since it is larger than the sum of its proper divisors (338588091597).

128324886571243 is an equidigital number, since it uses as much as digits as its factorization.

128324886571243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338588091596.

The product of its digits is 123863040, while the sum is 64.

The spelling of 128324886571243 in words is "one hundred twenty-eight trillion, three hundred twenty-four billion, eight hundred eighty-six million, five hundred seventy-one thousand, two hundred forty-three".