81403327824

Names of 81403327824

• Cardinal: 81403327824 can be written as Eighty-one billion, four hundred three million, three hundred twenty-seven thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 8.1403327824 × 10¹⁰

Factors of 81403327824

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 488

Divisors of 81403327824

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 39 42 48 52 56 61 71 78 84 91 104 112 122 142 156 168 169 182 183 208 213 244 273 284 312 331 336 338 364 366 426 427 488 497 507 546 568 624 662 676 728 732 793 852 854 923 976 993 994 1014 1092 1136 1183 1281 1324 1352 1456 1464 1491 1586 1704 1708 1846 1986 1988 2028 2184 2317 2366 2379 2562 2648 2704 2769 2928 2982 3172 3408 3416 3549 3692 3972 3976 4056 4303 4331 4368 4634 4732 4758 5124 5296 5538 5551 5964 6344 6461 6832 6951 7098 7384 7944 7952 8112 8606 8662 9268 9464 9516 10248 10309 11076 11102 11928 11999 12688 12909 12922 12993 13902 14196 14768 15888 16653 17212 17324 18536 18928 19032 19383 20191 20496 20618 22152 22204 23501 23856 23998 25818 25844 25986 27804 28392 30121 30317 30927 33306 34424 34648 35997 37072 38064 38766 40382 41236 44304 44408 47002 47996 51636 51688 51972 55608 55939 56303 56784 60242 60573 60634 61854 66612 68848 69296 70503 71994 72163 77532 80764 82472 83993 88816 90363 90951 94004 95992 103272 103376 103944 111216 111878 112606 120484 121146 121268 123708 133224 141006 141337 143988 144326 155064 161528 164507 164944 167817 167986 168909 180726 181902 188008 191984 206544 207888 216489 223756 225212 240968 242292 242536 247416 251979 262483 266448 282012 282674 287976 288652 305513 310128 323056 329014 335634 335972 337818 361452 363804 376016 391573 394121 424011 432978 447512 450424 481936 484584 485072 493521 494832 503958 524966 564024 565348 575952 577304 611026 658028 671268 671944 675636 722904 727608 731939 783146 787449 788242 848022 865956 895024 900848 916539 969168 987042 1007916 1049932 1128048 1130696 1154608 1174719 1182363 1222052 1316056 1342536 1343888 1351272 1433561 1445808 1455216 1463878 1566292 1574898 1576484 1696044 1731912 1833078 1837381 1974084 2015832 2099864 2138591 2195817 2261392 2349438 2364726 2444104 2632112 2685072 2702544 2867122 2927756 3132584 3149796 3152968 3392088 3412279 3463824 3666156 3674762 3948168 3971669 4031664 4199728 4277182 4300683 4391634 4698876 4729452 4888208 5123573 5512143 5734244 5855512 6265168 6299592 6305936 6415773 6784176 6824558 7332312 7349524 7896336 7943338 8554364 8601366 8783268 9397752 9458904 10034927 10236837 10247146 11024286 11468488 11711024 11915007 12599184 12831546 13649116 14664624 14699048 15370719 15886676 17108728 17202732 17566536 18636293 18795504 18917808 20069854 20473674 20494292 22048572 22936976 23830014 23885953 25663092 27298232 27801683 29398096 30104781 30741438 31773352 34217456 34405464 35133072 37272586 40139708 40947348 40988584 44097144 47660028 47771906 51326184 54596464 55603366 55908879 60209562 61482876 63546704 68810928 71657859 74545172 80279416 81894696 81977168 83405049 88194288 95320056 95543812 102652368 111206732 111817758 120419124 122965752 130454051 143315718 149090344 160558832 163789392 166810098 190640112 191087624 222413464 223635516 240838248 242271809 245931504 260908102 286631436 298180688 333620196 382175248 391362153 444826928 447271032 481676496 484543618 521816204 573262872 667240392 726815427 782724306 894542064 969087236 1043632408 1146525744 1334480784 1453630854 1565448612 1695902663 1938174472 2087264816 2907261708 3130897224 3391805326 3876348944 5087707989 5814523416 6261794448 6783610652 10175415978 11629046832 13567221304 20350831956 27134442608 40701663912 81403327824
• Sum of all divisors σ(n): 269045065728
• Sum of proper divisors (its aliquot sum) s(n): 187641737904
• 81403327824 is an abundant number, because the sum of its proper divisors (187641737904) is greater than itself. Its abundance is 106238410080

Bases of 81403327824

• Binary: 1001011110100000001000011010101010000₂
• Hexadecimal: 0x12F4043550
• Base-36: 11E9FTQO

Squares and roots of 81403327824

• 81403327824 squared (81403327824²) is 6626501780821612574976
• 81403327824 cubed (81403327824³) is 539419296790541524505092106932224
• The square root of 81403327824 is 285312.6843026787
• The cube root of 81403327824 is 4333.9182979199

Scales and comparisons

• 81,403,327,824 seconds is equal to 2,588 years, 19 weeks, 3 days, 3 hours, 30 minutes, 24 seconds.
• To count from 1 to 81,403,327,824 would take you about five thousand, one hundred seventy-six 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 81403327824 cubic inches would be around 361.2 feet tall.

Recreational maths with 81403327824

• 81403327824 backwards is 42872330418
• 81403327824 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81403327824's digits is 42
• More coming soon!