How much storage would it take to save that world to your system?

Your family has passed down this Minecraft world for the past six generations, all of you with the same goal to eventually have rendered every single chunk and made the size of the save file really frickin’ big. Now, as an old man, your fingers shaking and your ribs countable through your emaciated body, you sit down upon your forefathers’ graves. You open up your $80,000 Alienware Gaming Laptop and boot up Minecraft, the heat of the RTX 1,000,000 GPU instantly incinerates your legs into a fine ash. But just before you join your ancestors you get to see the size of the file you have all worked so hard for…

So how big is it?