The annual revenues of giant corporations such as Apple, Microsoft, and Walmart are colossal.

The scale of their profits takes on a whole new meaning when compared with the GDPs of many of the world's countries.

Walmart out-earned Belgium in 2017.

The annual revenues of companies such as Apple, Microsoft, and Walmart are so huge that they take on whole new dimensions. So much so that so that their profits dwarf the economy of many countries across the globe - for example, in 2017 Walmart earned more than the whole of Belgium.

We examined the earnings of giant conglomerates and compared them with the GDP of countries around the world, as reported by the IMF. Take a look and see what countries are being out-earned by a company.