Volume 7: Number names 数の単位
I'm sure you know 一 (ichi 1) and you have probably heard of 兆 (chou 1,000,000,000,000), but have you ever heard of 無量大数?
無量大数 originated in an ancient Japanese book on math and numbers in 1632. It originally meant 1088, and while there are still people who hold to that meaning, most moderns (apparently) take it to mean 1068.
Honestly, anything above 1 may not be extremely useful, but just in case you find yourself counting particles of anti-matter or the amount the government spends on square-widgets-for-round-holes, here is a chart to help: