A Range of Numbers from the smallest to the largest

Names of Very-Large and Infinitesimal Number

NameNumberGroupSymbol
Largest-named to smallest-named
septillion1,000,000,000,000,000,000,000,000yottaY
sextillion1,000,000,000,000,000,000,000zettaZ
quintillion1,000,000,000,000,000,000exaE
quadrillion1,000,000,000,000,000petaP
  —Numbers-names from large to small —
quadrillionth0.000 000 000 000 001femtof
quintillionth0.000 000 000 000 000 001attoa
sextillionth0.000 000 000 000 000 000 001zeptoz
septillionth0.000 000 000 000 000 000 000 001yoctoy

NamePower of 10Decimal
Thousand1031,000
Million1061,000,000
Billion1091,000,000,000
Trillion10121,000,000,000,000
Quadrillion1015etc …
Quintillion1018 
Sextillion1021 
Septillion1024 
Octillion1027 
Nonillion1030 
Decillion1033 
Undecillion1036 
Duodecillion1039 
Tredecillion1042 
Quattuordecillion1045 42 zeros
Quindecillion1048 
Sexdecillion1051 
Septemdecillion1054 
Octodecillion1057 
Novemdecillion1060 
Vigintillion106363 zeros