What is the meaning of Perfect_number?

5-letter words containing

• 5-letter words containing a

• 5-letter words containing e

• 5-letter words containing i

• 5-letter words containing e

• 5-letter words containing u

5-letter words starting with

• 5-letter words starting with n

• 5-letter words starting with e

• 5-letter words starting with a

• 5-letter words starting with r

• 5-letter words starting with k

5-letter words in the middle

• 5-letter words in the middle u

• 5-letter words in the middle i

• 5-letter words in the middle a

• 5-letter words in the middle k

• 5-letter words in the middle o

5-letter words ending with

• 5-letter words ending with d

• 5-letter words ending with r

• 5-letter words ending with u

• 5-letter words ending with s

• 5-letter words ending with e

5-letter words excluding

• 5-letter words excluding r

• 5-letter words excluding l

• 5-letter words excluding a

• 5-letter words excluding e

• 5-letter words excluding a