How did we get to know that n is 64 bit integer?

please help with this doubt

i have tried understanding this concept a number of times but never get it please help

@chemant077 bro aisa kuch specific method nhi hita ,compiler pr depend krta hai ,agr tum normlly int lete ho to woh age wali bits zero lekr adjust ho jata hai.

EK BAAR SMJHAOGE BRO YAAR BHUT TRY KIA SMJH NI AARA BHAI

@chemant077 bro is link ko refer kro you will get it clearly:
https://stackoverflow.com/questions/5812406/16-bit-int-vs-32-bit-int-vs-64-bit-int

and how is this 130 thing related to all this please explain this bro i coulnt get the bhaiyas explanation

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