The standard deck of 52 cards can be ordered in 52! (see factorial), or 8.065817517094 × 10⁶⁷ ways. There are various ways to shuffle cards in order to randomize them or to perform tricks with them.

Each of the four kings in a deck represents a great leader from history: Charlemagne (hearts), Alexander the Great (clubs), Julius Caesar (diamonds), King David (spades). The king of hearts is the only one without a moustache.