US was the wealthiest nation with GDP of $12.46 trillion, according to a list of 15 wealthiest countries prepared by the World Bank in terms of their gross domestic product.
The GDP figures have been adjusted to reflect purchasing power.
While India was way down compared to China, positioned fourth with $2.23 trillion of GDP, it was wealthier than Mexico, Russia and Australia.
The first nine countries had GDP of more than a trillion dollars.
The United States was followed by Japan with $4.51trillion and Germany $2.78 trillion.
Britain, France and Italy occupied fifth, sixth and seventh ranks with GDP of $2.19 trillion, $2.11 trillion and $1.72 trillion, respectively.
Next came Spain, Canada, Brazil and South Korea with their GDP estimated at $1.124 trillion, $1.115 trillion, $794.10 billion and $787.62 billion, respectively.
There was no African country among the 15 richest nations, while India was the only south Asian country in the list.