Is there a greatest name of Allah such that if He is invoked by it, He responds, and is this name known?

Allah Almighty has a Greatest Name (al-Ism al-A'dham) such that if He is supplicated by it, He responds, and if He is asked by it, He grants. He concealed it for a wisdom, just as He concealed Laylat al-Qadr (the Night of Decree) and the Hour of Response, so that the servant remains continuously connected to his Lord, supplicating Him with all His names. Allah may disclose this name to some of His righteous servants.