Error Passing 32 Bit Integer in URL

My code:

PHP Code:

public function index() {

    $device = $this->request->getGet('device');

    echo $device;
} 


With 4294967295
https://imgur.com/a/uQnAqbK

With 4294967294
https://imgur.com/a/BcJ7UHk


How do you explain this?