640243660056261012

Names of 640243660056261012

• Cardinal: 640243660056261012 can be written as Six hundred forty quadrillion, two hundred forty-three trillion, six hundred sixty billion, fifty-six million, two hundred sixty-one thousand and twelve.

Scientific notation

• Scientific notation: 6.40243660056261012 × 10¹⁷

Factors of 640243660056261012

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 25657125

Divisors of 640243660056261012

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 12 18 31 36 62 93 124 186 279 372 558 1116 2731 5462 8191 8193 10924 16382 16386 24573 24579 32764 32772 49146 49158 73719 84661 98292 98316 147438 169322 253921 253983 294876 338644 507842 507966 761763 761949 1015684 1015932 1523526 1523898 2285289 3047052 3047796 4570578 9141156 22369621 25646167 44739242 51292334 67108863 76938501 89478484 102584668 134217726 153877002 201326589 230815503 268435452 307754004 402653178 461631006 693458251 795031177 805306356 923262012 1386916502 1590062354 2080374753 2385093531 2773833004 3180124708 4160749506 4770187062 6241124259 7155280593 8321499012 9540374124 12482248518 14310561186 24964497036 28621122372 70039682077 140079364154 210067753897 210119046231 280158728308 420135507794 420238092462 630203261691 630357138693 840271015588 840476184924 1260406523382 1260714277386 1890609785073 2171230144387 2520813046764 2521428554772 3781219570146 4342460288774 6512100370807 6513690433161 7562439140292 8684920577548 13024200741614 13027380866322 19536301112421 19541071299483 26048401483228 26054761732644 39072602224842 39082142598966 58608903337263 78145204449684 78164285197932 117217806674526 234435613349052 573695035892707 1147390071785414 1721085107678121 2294780143570828 3442170215356242 5163255323034363 6884340430712484 10326510646068726 17784546112673917 20653021292137452 35569092225347834 53353638338021751 71138184450695668 106707276676043502 160060915014065253 213414553352087004 320121830028130506 640243660056261012
• Sum of all divisors σ(n): 1671415757226901504
• Sum of proper divisors (its aliquot sum) s(n): 1031172097170640492
• 640243660056261012 is an abundant number, because the sum of its proper divisors (1031172097170640492) is greater than itself. Its abundance is 390928437114379480

Bases of 640243660056261012

• Binary: 100011100010100110100011011101110111010110010111000110010100₂
• Hexadecimal: 0x8E29A3777597194
• Base-36: 4V43FP0429P0

Squares and roots of 640243660056261012

• 640243660056261012 squared (640243660056261012²) is 409911944242237112479533141471264144
• 640243660056261012 cubed (640243660056261012³) is 262443523482427876295683806678916304208039529660753728
• The square root of 640243660056261012 is 800152273.0432383219
• The cube root of 640243660056261012 is 861883.2266528495

Scales and comparisons

• 640,243,660,056,261,012 seconds is equal to 20,357,767,986 years, 6 weeks, 1 day, 11 hours, 10 minutes, 12 seconds.
• To count from 1 to 640,243,660,056,261,012 would take you about sixty-one billion, seventy-three million, three hundred three thousand, nine hundred fifty-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 640243660056261012 cubic inches would be around 71823.6 feet tall.

Recreational maths with 640243660056261012

• 640243660056261012 backwards is 210162650066342046
• The number of decimal digits it has is: 18
• The sum of 640243660056261012's digits is 54
• More coming soon!