OlafGet a copy of the 144 Deck:
This pack of 144 clean designed playing cards hits the sweet spot between compactness and versatility. It has 18 ranks in 8 suits and 120 sequence numbers as its basic system. Each suit includes three special cards, the suits have a ranking and can be grouped. You can play tons of awesome card games (and even other games) with this deck, making it a great travel companion and a way to explore and enjoy games that aren't available otherwise. The design is intuitive and made for actual card play, avoiding distracting and confusing labels, having a scratchmark-hiding back, and it's in the handy bridge card size.
But is 144 really the best card amount? Well, it's the only Practical Fibonacci number between 8 and 46368 - so, I think it is!
Find out more at BoardGameGeek (search for The 144 Deck)