Q10U1A1D2R1I1L1L1I1O1N1T1H4
26 points
QUADRILLIONTH is validvalid
the number one quadrillion in a series [n QUADRILLIONTHS]
the ordinal of quadrillion [adj] / one of a quadrillion equal parts [n -S]
the number one quadrillion in a series [n QUADRILLIONTHS]
the ordinal of quadrillion [adj] / one of a quadrillion equal parts [n -S]