Holy smokes that is a lot..
you will probably have to help her with feedings, to insure they are getting there fair share. As you will probably find that some will get most of mommies milk and not want to share.
Watch the runt of the litter closely.
And you may want to tag the puppies so you know who has eaten and who needs to. Easier to keep track if they are color coded or what ever works best for you. Prepare to help in the middle of the night to.
Poor mom.
Have fun with your new litter.
Oh and good-luck!