643979900340

Names of 643979900340

• Cardinal: 643979900340 can be written as Six hundred forty-three billion, nine hundred seventy-nine million, nine hundred thousand, three hundred forty.

Scientific notation

• Scientific notation: 6.4397990034 × 10¹¹

Factors of 643979900340

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 23722

Divisors of 643979900340

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 29 30 35 36 42 45 54 58 60 63 70 81 83 84 87 90 105 108 116 126 135 140 145 162 166 174 180 189 203 210 249 252 261 270 290 315 324 332 348 378 405 406 415 420 435 498 522 540 567 580 581 609 630 747 756 783 810 812 830 870 945 996 1015 1044 1134 1162 1218 1245 1260 1305 1494 1566 1620 1660 1740 1743 1827 1890 2030 2241 2268 2324 2349 2407 2436 2490 2610 2835 2905 2988 3045 3132 3486 3654 3735 3780 3915 4060 4482 4698 4814 4980 5220 5229 5481 5670 5810 6090 6723 6972 7221 7308 7470 7830 8715 8964 9135 9396 9628 10458 10962 11205 11340 11620 11745 12035 12180 13446 14442 14940 15660 15687 16443 16849 17430 18270 20916 21663 21924 22410 23490 23593 24070 26145 26892 27405 28884 31374 32886 33615 33698 34860 36105 36540 43326 44820 46980 47061 47186 48140 50547 52290 54810 62748 64989 65772 67230 67396 70779 72210 78435 82215 84245 86652 94122 94372 101094 104580 108315 109620 117965 129978 134460 141558 144420 151641 156870 164430 165151 168490 188244 194967 202188 212337 216630 235305 235930 252735 259956 283116 303282 313740 324945 328860 330302 336980 353895 389934 424674 433260 454923 470610 471860 495453 505470 606564 637011 649890 660604 684197 707790 758205 779868 825755 849348 909846 941220 974835 990906 1010940 1061685 1274022 1299780 1364769 1368394 1415580 1486359 1516410 1651510 1819692 1911033 1949670 1958219 1981812 2052591 2123370 2274615 2477265 2548044 2729538 2736788 2972718 3032820 3185055 3303020 3420985 3822066 3899340 3916438 4105182 4246740 4459077 4549230 4789379 4954530 5459076 5874657 5945436 6157773 6370110 6823845 6841970 7431795 7644132 7832876 8210364 8918154 9098460 9555165 9578758 9791095 9909060 10262955 11749314 12315546 12740220 13377231 13647690 13683940 13707533 14368137 14863590 17623971 17836308 18473319 19110330 19157516 19582190 20525910 22295385 23498628 23946895 24631092 26754462 27295380 27415066 28736274 29373285 29727180 30788865 35247942 36946638 38220660 39164380 41051820 41122599 43104411 44590770 47893790 52871913 53508924 54830132 55419957 56788351 57472548 58746570 61577730 66886155 68537665 70495884 71840685 73893276 82245198 86208822 88119855 89181540 92366595 95787580 105743826 110839914 113576702 117493140 123155460 123367797 129313233 133772310 137075330 143681370 158615739 164490396 170365053 172417644 176239710 184733190 205612995 211487652 215522055 221679828 227153404 246735594 258626466 264359565 267544620 274150660 277099785 283941755 287362740 317231478 340730106 352479420 369466380 370103391 387939699 397518457 411225990 431044110 493471188 511095159 517252932 528719130 554199570 567883510 616838985 634462956 646566165 681460212 740206782 775879398 793078695 795036914 822451980 851825265 862088220 1022190318 1057438260 1108399140 1110310173 1135767020 1192555371 1233677970 1293132330 1480413564 1533285477 1551758796 1586157390 1590073828 1703650530 1850516955 1939698495 1987592285 2044380636 2220620346 2385110742 2467355940 2555475795 2586264660 3066570954 3172314780 3407301060 3577666113 3701033910 3879396990 3975184570 4441240692 4599856431 4770221484 5110951590 5551550865 5962776855 6133141908 7155332226 7402067820 7666427385 7758793980 7950369140 9199712862 10221903180 10732998339 11103101730 11925553710 14310664452 15332854770 17888330565 18399425724 21465996678 22206203460 22999282155 23851107420 30665709540 32198995017 35776661130 42931993356 45998564310 53664991695 64397990034 71553322260 91997128620 107329983390 128795980068 160994975085 214659966780 321989950170 643979900340
• Sum of all divisors σ(n): 2417278913280
• Sum of proper divisors (its aliquot sum) s(n): 1773299012940
• 643979900340 is an abundant number, because the sum of its proper divisors (1773299012940) is greater than itself. Its abundance is 1129319112600

Bases of 643979900340

• Binary: 1001010111110000001100010111010110110100₂
• Hexadecimal: 0x95F03175B4
• Base-36: 87U90790

Squares and roots of 643979900340

• 643979900340 squared (643979900340²) is 414710112041916332115600
• 643979900340 cubed (643979900340³) is 267064976622743513458422429359304000
• The square root of 643979900340 is 802483.5825984231
• The cube root of 643979900340 is 8635.5652660881

Scales and comparisons

• 643,979,900,340 seconds is equal to 20,476 years, 29 weeks, 4 days, 1 hour, 39 minutes.
• To count from 1 to 643,979,900,340 would take you about forty thousand, nine hundred fifty-three 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 643979900340 cubic inches would be around 719.6 feet tall.

Recreational maths with 643979900340

• 643979900340 backwards is 043009979346
• 643979900340 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 643979900340's digits is 54
• More coming soon!