There's no such thing as a 16TB thumb/pen drive. Legitimate drives, as dialabrain noted, cost well over $1,000. A 4TB drive costs $600.
See this page on how they fake large sizes on drives that can't possibly hold that much data. This is just one of many such sites.
Or, you can get a great deal on a 16TB drive for only 71¢ here! Heck, the shipping costs more than the drive.
How did they get a drive that says a trusted name like Lenevo on it and call it a 16TB drive? From what I read a week or so ago, as they manufacture these storage chips, there's a rather high failure rate. Instead of grinding these failed chips down - as they should - they sell these useless chips to low tier manufacturers. Mainly in China. That's how they end up on the market at all in these clearly fake products.