18078069553821981

Names of 18078069553821981

• Cardinal: 18078069553821981 can be written as Eighteen quadrillion, seventy-eight trillion, sixty-nine billion, five hundred fifty-three million, eight hundred twenty-one thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 1.8078069553821981 × 10¹⁶

Factors of 18078069553821981

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 22015

Divisors of 18078069553821981

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 9 11 19 33 57 99 121 127 163 171 209 363 381 489 627 1089 1143 1397 1467 1793 1881 2161 2299 2413 3097 4191 5379 6483 6897 7239 9291 12573 15367 16137 19449 19531 19723 20691 20701 21717 23771 26543 27873 34067 41059 46101 58593 59169 62103 71313 79629 102201 123177 138303 175779 177507 186309 213939 214841 227711 238887 261481 274447 291973 306603 352243 369531 371089 374737 393319 451649 644523 683133 784443 823341 875919 1056729 1113267 1124211 1179957 1354947 1933569 2049399 2353329 2363251 2470023 2480437 2504821 2627757 3018917 3170187 3183553 3339801 3372633 3539871 3874673 4064841 4081979 4326509 4968139 5214493 6692617 7089753 7441311 7514463 9056751 9550659 11624019 12245937 12979527 14904417 15643479 20077851 21269259 22323933 22543389 27170253 27284807 28651977 33208087 34872057 35019083 36737811 38938581 42206491 42621403 44713251 44734861 44901769 46930437 47128303 47591599 57359423 60233553 60487507 73618787 81854421 99624261 105057249 126619473 127864209 134204583 134705307 141384909 142774797 172078269 181462521 220856361 245563263 298872783 300132877 315171747 379858419 383592627 385209913 402613749 404115921 404311231 424154727 428324391 464271401 492083471 516234807 518411333 544387563 630953653 662569083 665362577 801923329 809806657 849962359 900398631 1155629739 1212933693 1392814203 1476250413 1555233999 1892860959 1996087731 2405769987 2429419971 2549887077 2701195893 3466889217 3638801079 4178442609 4428751239 4447423541 4665701997 5106985411 5360224357 5412918181 5678582877 5702524663 5988263193 6879658033 7217309961 7288259913 7318988347 7649661231 7681913389 8821156619 9349585949 13342270623 15320956233 16080673071 16238754543 17107573989 20638974099 21956965041 23045740167 26463469857 28048757847 40026811869 45962868699 48242019213 48716263629 48921658951 51322721967 58962467927 61916922297 65870895123 69137220501 75676238363 79390409571 84146273541 84501047279 97032722809 101844262783 102845445439 130713502627 146764976853 176887403781 227028715089 253503141837 291098168427 305532788349 308536336317 392140507881 440294930559 530662211343 648587147197 681086145267 760509425511 832438621993 873294505281 873716570191 916598365047 925609008951 929511520069 1120286890613 1176421523643 1437848528897 1945761441591 2497315865979 2621149710573 2788534560207 3360860671839 4313545586691 5837284324773 7491947597937 7863449131719 8365603680621 9610882272101 10082582015517 12323155796743 12940636760073 15816333817867 16600614833629 28832646816303 36969467390229 47449001453601 49801844500887 86497940448909 105719704993111 110908402170687 142347004360803 149405533502661 182606763169919 317159114979333 547820289509757 951477344937999 1643460868529271 2008674394869109 6026023184607327 18078069553821981
• Sum of all divisors σ(n): 30653580652298240
• Sum of proper divisors (its aliquot sum) s(n): 12575511098476259
• 18078069553821981 is a deficient number, because the sum of its proper divisors (12575511098476259) is less than itself. Its deficiency is 5502558455345722

Bases of 18078069553821981

• Binary: 1000000001110011110100010010001111110101111100100011101₂
• Hexadecimal: 0x4039E891FAF91D
• Base-36: 4Y052I2F6L9

Squares and roots of 18078069553821981

• 18078069553821981 squared (18078069553821981²) is 326816598792825279188164638764361
• 18078069553821981 cubed (18078069553821981³) is 5908213204320228269232609029809604893536801219141
• The square root of 18078069553821981 is 134454711.9063589419
• The cube root of 18078069553821981 is 262452.4820597551

Scales and comparisons

• 18,078,069,553,821,981 seconds is equal to 574,826,692 years, 34 weeks, 6 days, 4 hours, 46 minutes, 21 seconds.
• To count from 1 to 18,078,069,553,821,981 would take you about one billion, seven hundred twenty-four million, four hundred eighty thousand and seventy-eight 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 18078069553821981 cubic inches would be around 21871 feet tall.

Recreational maths with 18078069553821981

• 18078069553821981 backwards is 18912835596087081
• The number of decimal digits it has is: 17
• The sum of 18078069553821981's digits is 81
• More coming soon!