Based on approximate sales figures, it's one of the top-selling books of all time: https://en.wikipedia.org/wiki/List_of_best-selling_books

> I've never heard of Little Prince before.

interesting. may I ask which region of the world you live in?

> I don't think it's as popular as the article claims.

that may be telling more about the region you live or yourself.

I suggest go to it's Wikipedia article and check the books impact.

ps: and to get a physical copy and to read it...

https://en.wikipedia.org/wiki/List_of_literary_works_by_numb...

This is the second most translated book after the Bible