The answer to your question depends partly on the definition of "whole number" that you have chosen or that your instructor/textbook/school/tutor/whatever has chosen.
Whole number means variously:
The non-negative integers:
The positive integers:
All integers:
The "consecutive" part simply means following one another in uninterrupted succession or order. For example, 3 is the next consecutive whole number after 2. 4 is the whole number that precedes 5 consecutively. If is a whole number, then is the next consecutive whole number.
John
My calculator said it, I believe it, that settles it