Question: how many arhats are there?
Answer: The Eighteen Arhats (or Luohan) (Chinese: 十八羅漢; pinyin: Shíbā Luóhàn; Wade–Giles: Shih-pa Lo-han) are depicted in Mahayana Buddhism as the original followers of Gautama Buddha (arhat) who have followed the Noble Eightfold Path and attained the four stages of enlightenment.