Celebrity Hackers -- Tons of Collateral Damage

Celebs like Kim Kardashian, Hillary Clinton, Mel Gibson, Jay-Z, Beyonce, and Kanye West aren't the only ones screwed by the hacking scandal -- TMZ has learned, their business teams have been PARALYZED by the massive security breach.

Several of the hacked celebrities -- who don't want to be named -- tell us, the phone numbers published online by the hackers have been blowing up all weekend.

Here's the rub ... the numbers don't belong to the celebs -- they're numbers of the celebs' lawyers, accountants, and business managers.

We're told fans have been calling the numbers nonstop, hoping to get through to the stars ... and it's become a gigantic pain in the ass -- in some cases more than 500 calls a day to a single number.