643438138355258750

Names of 643438138355258750

• Cardinal: 643438138355258750 can be written as Six hundred forty-three quadrillion, four hundred thirty-eight trillion, one hundred thirty-eight billion, three hundred fifty-five million, two hundred fifty-eight thousand, seven hundred fifty.

Scientific notation

• Scientific notation: 6.4343813835525875 × 10¹⁷

Factors of 643438138355258750

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 121

Divisors of 643438138355258750

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 5 7 10 14 25 35 49 50 70 98 107 125 175 214 245 250 343 350 490 535 625 686 749 875 1070 1225 1250 1498 1715 1750 2450 2675 3430 3745 4375 5243 5350 6125 7490 8575 8750 10486 11449 12250 13375 17150 18725 22898 26215 26750 30625 36701 37450 42875 52430 57245 61250 66875 73402 80143 85750 93625 114490 131075 133750 160286 183505 187250 214375 262150 286225 367010 400715 428750 468125 561001 572450 655375 801430 917525 936250 1122002 1225043 1310750 1431125 1835050 2003575 2450086 2805005 2862250 3276875 3927007 4007150 4587625 5610010 6125215 6553750 7155625 7854014 8575301 9175250 10017875 12250430 14025025 14311250 17150602 19635035 20035750 22938125 28050050 30626075 39270070 42876505 45876250 50089375 60027107 61252150 70125125 85753010 98175175 100178750 120054214 131079601 140250250 153130375 196350350 214382525 262159202 300135535 306260750 350625625 420189749 428765050 490875875 600271070 655398005 701251250 765651875 840379498 917557207 981751750 1071912625 1310796010 1500677675 1531303750 1835114414 2100948745 2143825250 2454379375 3001355350 3276990025 4201897490 4587786035 4908758750 5359563125 6422900449 6553980050 7503388375 9175572070 10504743725 10719126250 12845800898 14025517307 15006776750 16384950125 21009487450 22938930175 28051034614 32114502245 32769900250 37516941875 44960303143 45877860350 52523718625 64229004490 70127586535 75033883750 81924750625 89920606286 98178621149 105047437250 114694650875 140255173070 160572511225 163849501250 196357242298 224801515715 229389301750 262618593125 321145022450 350637932675 449603031430 490893105745 525237186250 573473254375 687250348043 701275865350 802862556125 981786211490 1124007578575 1146946508750 1374500696086 1500730351849 1605725112250 1753189663375 2248015157150 2454465528725 3001460703698 3436251740215 3506379326750 4014312780625 4810752436301 4908931057450 5620037892875 6872503480430 7503651759245 8028625561250 8765948316875 9621504872602 10505112462943 11240075785750 12272327643625 15007303518490 17181258701075 17531896633750 21010224925886 24053762181505 24544655287250 28100189464375 34362517402150 37518258796225 48107524363010 52525562314715 56200378928750 61361638218125 73535787240601 75036517592450 85906293505375 105051124629430 120268810907525 122723276436250 147071574481202 171812587010750 187591293981125 240537621815050 262627811573575 367678936203005 375182587962250 429531467526875 514750510684207 525255623147150 601344054537625 735357872406010 859062935053750 937956469905625 1029501021368414 1202688109075250 1313139057867875 1838394681015025 1875912939811250 2573752553421035 2626278115735750 3006720272688125 3676789362030050 5147505106842070 6013440545376250 6565695289339375 9191973405075125 12868762767105175 13131390578678750 18383946810150250 25737525534210350 45959867025375625 64343813835525875 91919734050751250 128687627671051750 321719069177629375 643438138355258750
• Sum of all divisors σ(n): 1419753207316580400
• Sum of proper divisors (its aliquot sum) s(n): 776315068961321650
• 643438138355258750 is an abundant number, because the sum of its proper divisors (776315068961321650) is greater than itself. Its abundance is 132876930606062900

Bases of 643438138355258750

• Binary: 100011101101111100111001001111100111100110101001010101111110₂
• Hexadecimal: 0x8EDF393E79A957E
• Base-36: 4VZJS82OATTQ

Squares and roots of 643438138355258750

• 643438138355258750 squared (643438138355258750²) is 414012637890081101342623779451562500
• 643438138355258750 cubed (643438138355258750³) is 266391520979543644737919994146439881798862779296875000
• The square root of 643438138355258750 is 802145958.2614991585
• The cube root of 643438138355258750 is 863314.2968161263
• Being both a perfect square and a perfect cube, 643438138355258750 is also a perfect sixth number.

Scales and comparisons

• 643,438,138,355,258,750 seconds is equal to 20,459,342,514 years, 44 weeks, 4 days, 2 hours, 5 minutes, 50 seconds.
• To count from 1 to 643,438,138,355,258,750 would take you about sixty-one billion, three hundred seventy-eight million, twenty-seven thousand, five hundred forty-four 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 643438138355258750 cubic inches would be around 71942.9 feet tall.

Recreational maths with 643438138355258750

• 643438138355258750 backwards is 057852553831834346
• The number of decimal digits it has is: 18
• The sum of 643438138355258750's digits is 80
• More coming soon!