643745984333513742

Names of 643745984333513742

• Cardinal: 643745984333513742 can be written as Six hundred forty-three quadrillion, seven hundred forty-five trillion, nine hundred eighty-four billion, three hundred thirty-three million, five hundred thirteen thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 6.43745984333513742 × 10¹⁷

Factors of 643745984333513742

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 7977972

Divisors of 643745984333513742

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 9 18 23 46 69 138 207 233 414 457 466 699 914 1371 1398 1831 2097 2742 3662 4113 4194 5359 5493 8226 10511 10718 10986 16077 16479 21022 31533 32154 32958 42113 48231 63066 84226 94599 96462 106481 126339 189198 212962 252678 319443 379017 426623 638886 758034 836767 853246 958329 1279869 1673534 1916658 2449063 2510301 2559738 3839607 4898126 5020602 7347189 7530903 7679214 7975423 9812329 14694378 15061806 15950846 19245641 19624658 22041567 23926269 29436987 38491282 44083134 47852538 57736923 58873974 71778807 88310961 115473846 143557614 173210769 176621922 183434729 194966711 346421538 366869458 389933422 550304187 584900133 1100608374 1169800266 1650912561 1754700399 1858273559 3301825122 3509400798 3644768311 3716547118 4484234353 5574820677 7289536622 8968468706 10934304933 11149641354 13452703059 14602999513 16724462031 21868609866 26905406118 29205999026 32802914799 33448924062 40358109177 42740291857 43808998539 65605829598 80716218354 83829671153 85480583714 87617997078 128220875571 131426995617 167659342306 251489013459 256441751142 262853991234 335868988799 384662626713 502978026918 671737977598 754467040377 769325253426 849231016463 1007606966397 1508934080754 1698462032926 2015213932794 2547693049389 3022820899191 3402498886529 5095386098778 6045641798382 6673570777441 6804997773058 7643079148167 10207496659587 13347141554882 15286158296334 19532313378649 20020712332323 20414993319174 30622489978761 39064626757298 40041424664646 58596940135947 60062136996969 61244979957522 78257474390167 117193880271894 120124273993938 153492127881143 156514948780334 175790820407841 234772423170501 306984255762286 351581640815682 460476383643429 469544846341002 704317269511503 920952767286858 1381429150930287 1408634539023006 1554941991143753 2762858301860574 3109883982287506 4664825973431259 9329651946862518 13994477920293777 27988955840587554 35763665796306319 71527331592612638 107290997388918957 214581994777837914 321872992166756871 643745984333513742
• Sum of all divisors σ(n): 1465670795640569856
• Sum of proper divisors (its aliquot sum) s(n): 821924811307056114
• 643745984333513742 is an abundant number, because the sum of its proper divisors (821924811307056114) is greater than itself. Its abundance is 178178826973542372

Bases of 643745984333513742

• Binary: 100011101111000010111000111111100001110010001000010000001110₂
• Hexadecimal: 0x8EF0B8FE1C8840E
• Base-36: 4W2KWMKBEMFI

Squares and roots of 643745984333513742

• 643745984333513742 squared (643745984333513742²) is 414408892345524520153855672102842564
• 643745984333513742 cubed (643745984333513742³) is 266774060319530810626802690701092556490207008356514488
• The square root of 643745984333513742 is 802337824.3193534883
• The cube root of 643745984333513742 is 863451.9559761349

Scales and comparisons

• 643,745,984,333,513,742 seconds is equal to 20,469,131,064 years, 38 weeks, 1 day, 19 hours, 35 minutes, 42 seconds.
• To count from 1 to 643,745,984,333,513,742 would take you about sixty-one billion, four hundred seven million, three hundred ninety-three thousand, one hundred ninety-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 643745984333513742 cubic inches would be around 71954.3 feet tall.

Recreational maths with 643745984333513742

• 643745984333513742 backwards is 247315333489547346
• The number of decimal digits it has is: 18
• The sum of 643745984333513742's digits is 81
• More coming soon!