How many ways can an ordinary deck of cards be mixed?

An ordinary deck of 52 cards can be shuffled in approximately 52 factorial (52!) ways, which is about 8.0658 x 10^67 different combinations. This vast number reflects the numerous possible arrangements of the cards, making it highly unlikely for two shuffled decks to be in the same order. In practical terms, this means that each shuffle produces a unique order with an incredible variety.