Wealthy
Affluent
noun, な adjective
If you're rich and abundant, you are super wealthy, probably.
ふゆう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
どうして人は富裕層と貧困層に分けられるのでしょうか。
Why do we separate people into the rich and the poor?