18166791313845

Names of 18166791313845

• Cardinal: 18166791313845 can be written as Eighteen trillion, one hundred sixty-six billion, seven hundred ninety-one million, three hundred thirteen thousand, eight hundred forty-five.

Scientific notation

• Scientific notation: 1.8166791313845 × 10¹³

Factors of 18166791313845

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 255

Divisors of 18166791313845

• Number of divisors d(n): 270
• Complete list of divisors:
  1 3 5 9 15 19 27 45 57 71 81 95 135 157 171 213 285 355 361 405 471 513 639 785 855 1065 1083 1349 1413 1539 1805 1917 2355 2565 2983 3195 3249 4047 4239 5041 5415 5751 6745 7065 7695 8949 9585 9747 11147 12141 12717 14915 15123 16245 20235 21195 24649 25205 25631 26847 28755 29241 33441 36423 44745 45369 48735 55735 56677 60705 63585 73947 75615 76893 80541 95779 100323 109269 123245 128155 134235 136107 146205 167205 170031 182115 211793 221841 226845 230679 241623 283385 287337 300969 369735 384465 402705 408321 468331 478895 501615 510093 546345 635379 665523 680535 692037 791437 850155 862011 902907 1058965 1109205 1153395 1208115 1404993 1436685 1504845 1530279 1750079 1819801 1906137 1996569 2041605 2076111 2341655 2374311 2550465 2586033 3176895 3327615 3460185 3957185 4024067 4214979 4310055 4514535 4590837 5250237 5459403 5718411 7024965 7122933 7651395 7758099 8750395 8898289 9099005 9530685 9982845 10380555 11871555 12072201 12644937 12930165 15037303 15750711 16378209 17155233 20120335 21074895 21368799 22954185 26251185 26694867 27297015 28592055 33251501 35614665 36216603 37934811 38790495 44491445 45111909 47252133 49134627 60361005 63224685 64106397 75186515 78753555 80084601 81891045 85776165 99754503 106843995 108649809 124255609 133474335 135335727 141756399 147403881 166257505 181083015 189674055 225559545 236260665 240253803 245673135 285708757 299263509 320531985 325949427 372766827 400423005 406007181 498772515 543249045 621278045 631778519 676678635 708781995 720761409 737019405 857126271 897790527 1118300481 1201269015 1218021543 1428543785 1496317545 1629747135 1863834135 1895335557 2030035905 2360856571 2571378813 2693371581 3158892595 3354901443 3603807045 4285631355 4488952635 5591502405 5686006671 6090107715 7082569713 7714136439 9476677785 10064704329 11804282855 12856894065 13466857905 16774507215 17058020013 21247709139 23142409317 28430033355 35412848565 38570682195 44856274849 50323521645 51174060039 63743127417 85290100065 106238545695 115712046585 134568824547 191229382251 224281374245 255870300195 318715637085 403706473641 672844122735 956146911255 1211119420923 2018532368205 3633358262769 6055597104615 18166791313845
• Sum of all divisors σ(n): 35084204659746
• Sum of proper divisors (its aliquot sum) s(n): 16917413345901
• 18166791313845 is a deficient number, because the sum of its proper divisors (16917413345901) is less than itself. Its deficiency is 1249377967944

Bases of 18166791313845

• Binary: 100001000010111001001001001001001100110110101₂
• Hexadecimal: 0x1085C92499B5
• Base-36: 6FTPIHUB9

Squares and roots of 18166791313845

• 18166791313845 squared (18166791313845²) is 330032306640794141288684025
• 18166791313845 cubed (18166791313845³) is 5995628041570208516496030619960812826125
• The square root of 18166791313845 is 4262251.9064275167
• The cube root of 18166791313845 is 26288.1127703949

Scales and comparisons

• 18,166,791,313,845 seconds is equal to 577,647 years, 40 weeks, 8 hours, 30 minutes, 45 seconds.
• To count from 1 to 18,166,791,313,845 would take you about one million, four hundred forty-four thousand, one hundred nineteen 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 18166791313845 cubic inches would be around 2190.7 feet tall.

Recreational maths with 18166791313845

• 18166791313845 backwards is 54831319766181
• The number of decimal digits it has is: 14
• The sum of 18166791313845's digits is 63
• More coming soon!