(10^165). This is a very enormous number!
A Quattuorquinquagintillionaire is someone whos assets, net worth or wealth is 1 or more Quattuorquinquagintillion. It is unlikely anyone will ever be a true Quattuorquinquagintillionaire. If you want to be a Quattuorquinquagintillionaire, play Tap Tales!
Quattuorquinquagintillion is not the largest number.
best describes the largest possible number - if there even is one! We cannot comprehend what the largest number actually is.