81946791342

Names of 81946791342

• Cardinal: 81946791342 can be written as Eighty-one billion, nine hundred forty-six million, seven hundred ninety-one thousand, three hundred forty-two.

Scientific notation

• Scientific notation: 8.1946791342 × 10¹⁰

Factors of 81946791342

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 129

Divisors of 81946791342

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 6 9 13 18 19 26 27 31 38 39 54 57 61 62 78 81 93 114 117 122 162 171 183 186 234 243 247 279 342 351 361 366 403 486 494 513 549 558 589 702 722 741 793 806 837 1026 1053 1083 1098 1159 1178 1209 1482 1539 1586 1647 1674 1767 1891 2106 2166 2223 2318 2379 2418 2511 3078 3159 3249 3294 3477 3534 3627 3782 4446 4617 4693 4758 4941 5022 5301 5673 6318 6498 6669 6859 6954 7137 7254 7533 7657 9234 9386 9747 9882 10431 10602 10881 11191 11346 13338 13718 14079 14274 14823 15066 15067 15314 15903 17019 19494 20007 20577 20862 21411 21762 22021 22382 22971 24583 28158 29241 29646 30134 31293 31806 32643 33573 34038 35929 40014 41154 42237 42822 44042 45201 45942 47709 49166 51057 58482 60021 61731 62586 64233 65286 66063 67146 68913 71858 73749 84474 87723 89167 90402 93879 95418 97929 100719 102114 107787 120042 123462 126711 128466 132126 135603 137826 143127 145483 147498 153171 175446 178334 185193 187758 192699 195858 198189 201438 206739 212629 215574 221247 253422 267501 271206 281637 286254 286273 290966 302157 306342 323361 370386 380133 385398 396378 406809 413478 418399 425258 436449 442494 459513 467077 535002 555579 563274 572546 594567 604314 620217 637887 646722 663741 682651 760266 802503 813618 836798 858819 872898 906471 919026 934154 970083 1111158 1140399 1189134 1220427 1240434 1255197 1275774 1309347 1327482 1365302 1401231 1605006 1666737 1717638 1783701 1812942 1860651 1913661 1940166 1991223 2047953 2280798 2407509 2440854 2510394 2576457 2618694 2719413 2764177 2802462 2910249 3333474 3567402 3661281 3721302 3765591 3827322 3928041 3982446 4095906 4203693 4815018 5152914 5351103 5438826 5439187 5528354 5740983 5820498 5973669 6143859 7222527 7322562 7531182 7729371 7856082 8292531 8407386 8730747 8874463 10702206 10878374 11296773 11481966 11784123 11947338 12287718 12611079 12970369 14445054 15458742 16317561 16585062 17222949 17461494 17748926 18431577 21667581 22593546 23188113 23568246 24877593 25222158 25940738 26623389 32635122 33890319 34445898 35352369 36863154 37833237 38911107 43335162 46376226 48952683 49755186 51668847 53246778 55294731 67780638 69564339 70704738 74632779 75666474 77822214 79870167 97905366 101670957 103337694 110589462 113499711 116733321 139128678 146858049 149265558 159740334 165884193 168614797 203341914 223898337 226999422 233466642 239610501 293716098 331768386 337229594 350199963 440574147 447796674 479221002 505844391 671695011 700399926 718831503 881148294 1011688782 1050599889 1321722441 1343390022 1437663006 1517533173 2101199778 2156494509 2643444882 3035066346 3151799667 4312989018 4552599519 6303599334 9105199038 13657798557 27315597114 40973395671 81946791342
• Sum of all divisors σ(n): 219599278080
• Sum of proper divisors (its aliquot sum) s(n): 137652486738
• 81946791342 is an abundant number, because the sum of its proper divisors (137652486738) is greater than itself. Its abundance is 55705695396

Bases of 81946791342

• Binary: 1001100010100011010001100110110101110₂
• Hexadecimal: 0x131468CDAE
• Base-36: 11N904VI

Squares and roots of 81946791342

• 81946791342 squared (81946791342²) is 6715276611249286160964
• 81946791342 cubed (81946791342³) is 550295371265858102978965133573688
• The square root of 81946791342 is 286263.4998423655
• The cube root of 81946791342 is 4343.5415912673

Scales and comparisons

• 81,946,791,342 seconds is equal to 2,605 years, 34 weeks, 5 hours, 35 minutes, 42 seconds.
• To count from 1 to 81,946,791,342 would take you about five thousand, two hundred eleven 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 81946791342 cubic inches would be around 362 feet tall.

Recreational maths with 81946791342

• 81946791342 backwards is 24319764918
• 81946791342 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81946791342's digits is 54
• More coming soon!