81426311802

Names of 81426311802

• Cardinal: 81426311802 can be written as Eighty-one billion, four hundred twenty-six million, three hundred eleven thousand, eight hundred two.

Scientific notation

• Scientific notation: 8.1426311802 × 10¹⁰

Factors of 81426311802

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 744

Divisors of 81426311802

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 6 9 11 18 19 22 27 33 38 54 57 66 71 99 114 142 171 198 209 213 297 307 331 342 418 426 513 594 614 627 639 662 781 921 993 1026 1254 1278 1349 1562 1842 1881 1917 1986 2343 2698 2763 2979 3377 3641 3762 3834 4047 4686 5526 5643 5833 5958 6289 6754 7029 7282 8094 8289 8937 10131 10923 11286 11666 12141 12578 14058 14839 16578 17499 17874 18867 20262 21087 21797 21846 23501 24282 29678 30393 32769 34998 36423 37734 42174 43594 44517 47002 52497 56601 60786 64163 65391 65538 69179 70503 72846 89034 91179 98307 101617 104994 113202 128326 130782 133551 138358 141006 157491 169803 182358 192489 196173 196614 203234 207537 211509 239767 258511 267102 304851 314982 339606 384978 392346 400653 414143 415074 423018 446519 479534 517022 577467 588519 609702 622611 634527 719301 775533 801306 828286 893038 914553 1117787 1154934 1177038 1242429 1245222 1269054 1339557 1438602 1551066 1732401 1829106 1867833 1930723 2157903 2235574 2326599 2484858 2679114 2743659 3353361 3464802 3727287 3735666 3861446 4018671 4315806 4555573 4653198 4911709 5487318 5792169 6473709 6706722 6979797 7214807 7454574 8037342 9111146 9823418 10060083 11181861 11584338 12056013 12947418 13666719 13959594 14429614 14735127 17376507 20120166 21237953 21644421 22363722 24112026 27333438 29470254 30180249 34753014 41000157 42475906 43288842 44205381 52129521 60360498 63713859 64933263 79362877 82000314 88410762 104259042 123000471 127427718 129866526 132616143 137081333 158725754 191141577 194799789 238088631 246000942 265232286 274162666 382283154 389599578 411243999 476177262 573424731 714265893 822487998 1146849462 1233731997 1428531786 1507894663 2142797679 2467463994 3015789326 3701195991 4285595358 4523683989 7402391982 9047367978 13571051967 27142103934 40713155901 81426311802
• Sum of all divisors σ(n): 212038041600
• Sum of proper divisors (its aliquot sum) s(n): 130611729798
• 81426311802 is an abundant number, because the sum of its proper divisors (130611729798) is greater than itself. Its abundance is 49185417996

Bases of 81426311802

• Binary: 1001011110101011000101110101001111010₂
• Hexadecimal: 0x12F562EA7A
• Base-36: 11EN4GAI

Squares and roots of 81426311802

• 81426311802 squared (81426311802²) is 6630244253676524487204
• 81426311802 cubed (81426311802³) is 539876335923283467742761063181608
• The square root of 81426311802 is 285352.9600372143
• The cube root of 81426311802 is 4334.3261490157

Scales and comparisons

• 81,426,311,802 seconds is equal to 2,589 years, 5 weeks, 3 days, 3 hours, 56 minutes, 42 seconds.
• To count from 1 to 81,426,311,802 would take you about five thousand, one hundred seventy-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 81426311802 cubic inches would be around 361.2 feet tall.

Recreational maths with 81426311802

• 81426311802 backwards is 20811362418
• The number of decimal digits it has is: 11
• The sum of 81426311802's digits is 36
• More coming soon!