4 Answers

But I sense that you wanted a different kind of answer. I think that perhaps the answer you seek is: quadrillion, quintillion, sextillion, septillion, and octillion.

The reason why I have not written out your answer in numerals is that there are nomenclatural differences in how words like 'billion', 'trillion', and the like are used. There is one usage in the U. S. A. and another in the rest of the world; although the former increasingly appears in financial publications in the dark, outside world, as finance increasingly presents itself as an international concern.

In the U. S. A.:

one billion = 1,000 X 1 million = 10^9;

one trillion = 1 million-squared = 10^12;

one quadrillion = 1,000 X 1 million-squared = 10^15; and so forth.

In Britain, France, Canada, Germany, Italy, and the rest of the counting world:

one milliard = 1 thousand million = 10^9;

one billion = 1 million-squared = 10^12;

one trillion = 1 million-cubed = 10^18;

one quadrillion (if we can count that high) = one million to the fourth power = 10^24; and so forth.