The byllion is equal to \(10^{16}\) in the myriad system[1][2][3], or 10 squared 4 times. It is equal to 10 quadrillion in the short scale and 10 billiard in the long scale.
Donald Knuth calls this number septyriad, and it's equal to using the -yllion system.
Jonathan Bowers calls this number quadpicillion, and it's equal to using the quad-illion system.
As a banknote denomination
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Only the Hungarian pengő had banknotes with this number in the denomination.
Sources
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See also
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