81001520100

Names of 81001520100

• Cardinal: 81001520100 can be written as Eighty-one billion, one million, five hundred twenty thousand, one hundred.

Scientific notation

• Scientific notation: 8.10015201 × 10¹⁰

Factors of 81001520100

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 656

Divisors of 81001520100

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 19 20 25 27 30 34 36 38 45 50 51 54 57 60 68 75 76 85 90 95 100 102 108 114 135 150 153 170 171 180 190 204 225 228 255 270 285 293 300 306 317 323 340 342 380 425 450 459 475 510 513 540 570 586 612 634 646 675 684 765 850 855 879 900 918 950 951 969 1020 1026 1140 1172 1268 1275 1292 1350 1425 1465 1530 1585 1615 1700 1710 1758 1836 1900 1902 1938 2052 2295 2550 2565 2637 2700 2850 2853 2907 2930 3060 3170 3230 3420 3516 3804 3825 3876 4275 4395 4590 4755 4845 4981 5100 5130 5274 5389 5567 5700 5706 5814 5860 6023 6340 6460 7325 7650 7911 7925 8075 8550 8559 8721 8790 9180 9510 9690 9962 10260 10548 10778 11134 11412 11475 11628 12046 12825 13185 14265 14535 14650 14943 15300 15822 15850 16150 16167 16701 17100 17118 17442 17580 18069 19020 19380 19924 21556 21975 22268 22950 23775 24092 24225 24905 25650 26370 26945 27835 28530 29070 29300 29886 30115 31644 31700 32300 32334 33402 34236 34884 36138 39555 42795 43605 43950 44829 45900 47550 48450 48501 49810 50103 51300 52740 53890 54207 55670 57060 58140 59772 60230 64668 65925 66804 71325 72276 72675 74715 79110 80835 83505 85590 87210 87900 89658 90345 92881 94639 95100 96900 97002 99620 100206 102391 107780 108414 111340 120460 124525 131850 134487 134725 139175 142650 145350 145503 149430 150309 150575 158220 161670 162621 167010 171180 174420 179316 180690 185762 189278 194004 197775 200412 204782 213975 216828 218025 224145 242505 249050 250515 263700 268974 269450 271035 278350 278643 283917 285300 290700 291006 298860 300618 301150 307173 323340 325242 334020 361380 371524 373575 378556 395550 404175 409564 417525 427950 436050 448290 451725 464405 473195 485010 498100 501030 511955 537948 538900 542070 556700 557286 567834 582012 601236 602300 614346 650484 672435 727515 747150 751545 791100 808350 813105 835050 835929 851751 855900 872100 896580 903450 921519 928810 946390 970020 1002060 1023910 1084140 1114572 1120725 1135668 1212525 1228692 1252575 1344870 1355175 1393215 1419585 1455030 1494300 1503090 1535865 1578977 1616700 1626210 1670100 1671858 1703502 1764739 1806900 1843038 1857620 1892780 2047820 2241450 2322025 2365975 2425050 2505150 2507787 2555253 2559775 2689740 2710350 2764557 2786430 2839170 2910060 3006180 3071730 3157954 3252420 3343716 3362175 3407004 3529478 3637575 3686076 3757725 4065525 4179645 4258755 4482900 4607595 4644050 4731950 4736931 4850100 5010300 5015574 5110506 5119550 5294217 5420700 5529114 5572860 5678340 6143460 6315908 6724350 6966075 7058956 7097925 7275150 7515450 7679325 7894885 8131050 8359290 8517510 8823695 9215190 9288100 9463900 9473862 10031148 10221012 10239100 10588434 11058228 12538935 12776265 13448700 13822785 13932150 14195850 14210793 14550300 15030900 15358650 15789770 15882651 16262100 16718580 17035020 17647390 18430380 18947724 20898225 21176868 21293775 23037975 23684655 25077870 25552530 26471085 27645570 27864300 28391700 28421586 30000563 30717300 31579540 31765302 35294780 39474425 41796450 42587550 42632379 44118475 46075950 47369310 47647953 50155740 51105060 52942170 55291140 56843172 60001126 62694675 63530604 63881325 69113925 71053965 78948850 79413255 83592900 85175100 85264758 88236950 90001689 92151900 94738620 95295906 105884340 118423275 120002252 125389350 127762650 132355425 138227850 142107930 150002815 157897700 158826510 170529516 176473900 180003378 190591812 213161895 236846550 238239765 250778700 255525300 264710850 270005067 276455700 284215860 300005630 317653020 355269825 360006756 397066275 426323790 450008445 473693100 476479530 529421700 540010134 600011260 710539650 750014075 794132550 810015201 852647580 900016890 952959060 1065809475 1080020268 1191198825 1350025335 1421079300 1500028150 1588265100 1620030402 1800033780 2131618950 2250042225 2382397650 2700050670 3000056300 3240060804 4050076005 4263237900 4500084450 4764795300 5400101340 6750126675 8100152010 9000168900 13500253350 16200304020 20250380025 27000506700 40500760050 81001520100
• Sum of all divisors σ(n): 292143801600
• Sum of proper divisors (its aliquot sum) s(n): 211142281500
• 81001520100 is an abundant number, because the sum of its proper divisors (211142281500) is greater than itself. Its abundance is 130140761400

Bases of 81001520100

• Binary: 1001011011100000100010001101111100100₂
• Hexadecimal: 0x12DC111BE4
• Base-36: 117M7OX0

Squares and roots of 81001520100

• 81001520100 squared (81001520100²) is 6561246258510704010000
• 81001520100 cubed (81001520100³) is 531470920689804586931165601000000
• The square root of 81001520100 is 284607.6599461089
• The cube root of 81001520100 is 4326.7757769699

Scales and comparisons

• 81,001,520,100 seconds is equal to 2,575 years, 31 weeks, 14 hours, 15 minutes.
• To count from 1 to 81,001,520,100 would take you about five thousand, one hundred fifty-one 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 81001520100 cubic inches would be around 360.6 feet tall.

Recreational maths with 81001520100

• 81001520100 backwards is 00102510018
• 81001520100 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81001520100's digits is 18
• More coming soon!