S5e2gtzota.7z.004 -

: This is the "part number." It indicates that the original file was too large for a single transfer and was split into smaller volumes. You are looking at the fourth piece of that set. Technical Characteristics

: This indicates the 7-Zip archive format, known for its high compression ratios and open-source roots. S5E2GTZOTA.7z.004

: Likely refers to a version, season (in media), or hardware series. : This is the "part number

: If you are missing any parts (e.g., you have .004 but not .003), the archive is considered "corrupt" and cannot be viewed. season (in media)

: You cannot open ".004" by itself. To extract the data, you must have all preceding parts (e.g., .001, .002, .003) and subsequent parts in the same folder.