121721040499694405

Names of 121721040499694405

• Cardinal: 121721040499694405 can be written as One hundred twenty-one quadrillion, seven hundred twenty-one trillion, forty billion, four hundred ninety-nine million, six hundred ninety-four thousand, four hundred five.

Scientific notation

• Scientific notation: 1.21721040499694405 × 10¹⁷

Factors of 121721040499694405

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 778986771

Divisors of 121721040499694405

• Number of divisors d(n): 128
• Complete list of divisors:
  1 5 7 11 19 35 41 55 77 95 133 205 209 287 385 451 521 665 779 1045 1435 1463 2255 2605 3157 3647 3895 5453 5731 7315 8569 9899 15785 18235 21361 27265 28655 40117 42845 49495 59983 69293 106805 108889 149527 200585 234971 299915 346465 405859 544445 747635 762223 1174855 1644797 2029295 2841013 3811115 4464449 8223985 14205065 22322245 31251143 156255715 778986167 3894930835 5452903169 8568847837 14800737173 27264515845 31938432847 42844239185 59981934859 74003685865 103605160211 159692164235 162808108903 223569029929 299909674295 351322761317 405851793007 518025801055 606830224093 814040544515 1117845149645 1139656762321 1756613806585 2029258965035 2459259329219 2840962551049 3034151120465 4247811568651 4464369723077 5698283811605 6675132465023 7711184067133 12296296646095 14204812755245 16639923513287 21239057843255 22321848615385 31250588061539 33375662325115 38555920335665 46725927255161 53978288469931 83199617566435 84823024738463 116479464593009 156252940307695 183039158646157 233629636275805 269891442349655 316158546752453 424115123692315 582397322965045 593761173169241 915195793230785 1281274110523099 1580792733762265 2213109827267171 2968805865846205 3477744014276983 6406370552615495 11065549136335855 17388720071384915 24344208099938881 121721040499694405
• Sum of all divisors σ(n): 196744236448112640
• Sum of proper divisors (its aliquot sum) s(n): 75023195948418235
• 121721040499694405 is a deficient number, because the sum of its proper divisors (75023195948418235) is less than itself. Its deficiency is 46697844551276170

Bases of 121721040499694405

• Binary: 110110000011100001010010000110100101011001101101101000101₂
• Hexadecimal: 0x1B070A434ACDB45
• Base-36: XAIIA1TDU85

Squares and roots of 121721040499694405

• 121721040499694405 squared (121721040499694405²) is 14816011700328245567256898388304025
• 121721040499694405 cubed (121721040499694405³) is 1803420360219600542890460592423013081475038731480125
• The square root of 121721040499694405 is 348885426.0351016797
• The cube root of 121721040499694405 is 495589.2591422345

Scales and comparisons

• 121,721,040,499,694,405 seconds is equal to 3,870,352,579 years, 51 weeks, 3 days, 20 hours, 5 seconds.
• To count from 1 to 121,721,040,499,694,405 would take you about eleven billion, six hundred eleven million, fifty-seven thousand, seven hundred thirty-nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 121721040499694405 cubic inches would be around 41299.1 feet tall.

Recreational maths with 121721040499694405

• 121721040499694405 backwards is 504496994040127121
• The number of decimal digits it has is: 18
• The sum of 121721040499694405's digits is 68
• More coming soon!