76. 17 Buttons (counting R3 and L3) plus 2 joysticks and motion which aren't buttons.
Start, Select, PS button, R1, R2, R3, L1, L2, L3, X, Circle, Triangle, Square, D-Pad Up, D-Pad Down, D-Pad Left, D-Pad Right, Left Analogue Stick, Right Analogue Stick.