It is not possible to determine an exact number of kings and rulers throughout history as there have been countless dynasties, kingdoms, and empires throughout the world over thousands of years. Additionally, the concept of a "king" or "ruler" has evolved over time, and in different cultures and civilizations, there have been various forms of governance, ranging from monarchies to republics, and from dictatorships to theocracies.

Moreover, many historical records have been lost over time or have not been preserved, making it difficult to accurately account for all of the rulers and leaders throughout history. Therefore, it is not possible to provide a specific number for the total number of kings and rulers throughout history.
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