Brazil is the largest country in South America, with an area of 8, 515, 767 square kilometers. It is bordered by every other South American country except for Ecuador and Chile. BRAZIL is the fifth most populous country in the world, with a population of over 211 million people. It is the world's ninth-largest economy by nominal GDP and the eighth-largest by purchasing power parity. BRAZIL is a founding member of the United Nations, the G20, BRICS, Mercosur, and the Union of South American Nations.