81339339690

Names of 81339339690

• Cardinal: 81339339690 can be written as Eighty-one billion, three hundred thirty-nine million, three hundred thirty-nine thousand, six hundred ninety.

Scientific notation

• Scientific notation: 8.133933969 × 10¹⁰

Factors of 81339339690

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 831

Divisors of 81339339690

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 23 30 35 42 45 46 63 69 70 73 90 105 115 126 131 138 146 161 207 210 219 230 262 315 322 345 365 393 414 438 483 511 587 630 655 657 690 730 786 805 917 966 1022 1035 1095 1174 1179 1310 1314 1449 1533 1610 1679 1761 1834 1965 2070 2190 2358 2415 2555 2751 2898 2935 3013 3066 3285 3358 3522 3930 4109 4585 4599 4830 5037 5110 5283 5502 5870 5895 6026 6570 7245 7665 8218 8253 8395 8805 9039 9170 9198 9563 10074 10566 11753 11790 12327 13501 13755 14490 15065 15111 15330 16506 16790 17610 18078 19126 20545 21091 22995 23506 24654 25185 26415 27002 27117 27510 28689 30130 30222 35259 36981 40503 41090 41265 42182 42851 45195 45990 47815 50370 52830 54234 57378 58765 61635 63273 66941 67505 70518 73962 75555 76897 81006 82530 85702 86067 90390 94507 95630 105455 105777 117530 121509 123270 126546 128553 133882 135010 135585 143445 151110 153794 172134 176295 184905 189014 189819 200823 202515 210910 211554 214255 219949 230691 243018 257106 271170 283521 286890 299957 316365 334705 352590 369810 379638 384485 385659 401646 405030 428510 430335 439898 461382 472535 528885 538279 567042 599914 602469 607545 632730 642765 659847 669410 692073 768970 771318 850563 860670 899871 945070 949095 985573 1004115 1057770 1076558 1099745 1153455 1204938 1215090 1285530 1319694 1384146 1417605 1499785 1539643 1614837 1701126 1768631 1799742 1898190 1928295 1971146 1979541 2008230 2199490 2306910 2691395 2699613 2835210 2956719 2999570 3012345 3079286 3229674 3299235 3460365 3537262 3856590 3959082 4252815 4499355 4618929 4844511 4927865 5305893 5382790 5399226 5613481 5913438 6024690 6598470 6899011 6920730 7698215 8074185 8505630 8843155 8870157 8998710 9237858 9689022 9855730 9897705 10611786 11226962 12380417 13498065 13798022 13856787 14783595 15396430 15917679 16148370 16840443 17686310 17740314 19795410 20697033 23094645 24222555 24760834 26529465 26996130 27713574 28067405 29567190 31835358 33680886 34495055 37141251 39294367 41394066 44350785 46189290 48445110 50521329 53058930 56134810 61902085 62091099 68990110 69283935 74282502 78588734 79588395 84202215 88701570 101042658 103485165 111423753 117883101 123804170 124182198 129110063 138567870 159176790 168404430 185706255 196471835 206970330 222847506 235766202 252606645 258220126 310455495 353649303 371412510 387330189 392943670 505213290 557118765 589415505 620910990 645550315 707298606 774660378 903770441 1114237530 1161990567 1178831010 1291100630 1768246515 1807540882 1936650945 2323981134 2711311323 3536493030 3873301890 4518852205 5422622646 5809952835 8133933969 9037704410 11619905670 13556556615 16267867938 27113113230 40669669845 81339339690
• Sum of all divisors σ(n): 258047741952
• Sum of proper divisors (its aliquot sum) s(n): 176708402262
• 81339339690 is an abundant number, because the sum of its proper divisors (176708402262) is greater than itself. Its abundance is 95369062572

Bases of 81339339690

• Binary: 1001011110000001100111101001110101010₂
• Hexadecimal: 0x12F033D3AA
• Base-36: 11D7CC6I

Squares and roots of 81339339690

• 81339339690 squared (81339339690²) is 6616088181205209296100
• 81339339690 cubed (81339339690³) is 538148243990044792533023692209000
• The square root of 81339339690 is 285200.5254027417
• The cube root of 81339339690 is 4332.7824228173

Scales and comparisons

• 81,339,339,690 seconds is equal to 2,586 years, 17 weeks, 4 days, 13 hours, 1 minute, 30 seconds.
• To count from 1 to 81,339,339,690 would take you about five thousand, one hundred seventy-two 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 81339339690 cubic inches would be around 361.1 feet tall.

Recreational maths with 81339339690

• 81339339690 backwards is 09693393318
• The number of decimal digits it has is: 11
• The sum of 81339339690's digits is 54
• More coming soon!