In this task you will be given a list of numbers. You should remove any number that is not an integer (whole number). If every number is not an whole number then an empty list ("[]") should be returned. Otherwise, answer with the list of whole numbers separated by comma inside brackets.

[-38.645, -11.988, -46.128, -66, 49, 8.997, 12.62, 13.653, 20]
[-66, 49, 20]