More recent estimates of world GDP are about 65.6 trillion dollars ($ 65,610,000,000,000)
Again though, this is just a measure of the total value of goods and services provided in a given year. The value of all the worlds assests, (stocks, bonds, and saving etc) would be considerably higher.
Recent estimates are around the $180 trillion mark, with the richest tenth of the worlds people owning about 85% of it.