It may be a unique key from a specific private database or a "hidden" link on a forum.
If you actually have the .epub file, open it with an ebook reader like Calibre or Apple Books . These apps read the internal metadata (Title, Author, ISBN) regardless of what the file is named on your computer. 501608aeejbjmglrbndl epub
This string looks like a randomly generated ID often used by cloud storage services (like Google Drive or MEGA) or specific ebook management software (like Calibre) to store files. It may be a unique key from a
If you can open the file and read a few unique sentences, copy and paste a distinctive paragraph into a search engine in "quotes" to find the original title. 501608aeejbjmglrbndl epub