Hey guys, just as the title says, what is the file size for a bitcoin? Does it vary, depending on what coin, or does the file size stay the same? I'm not talking about the size of a wallet.dat file, as those have other information kept inside. I want to know the size of the pure coin.

Does the coin change size the more it is transacted?
Does the coin's size vary if I compare a bitcoin to a litecoin?