81591940271712

Names of 81591940271712

• Cardinal: 81591940271712 can be written as Eighty-one trillion, five hundred ninety-one billion, nine hundred forty million, two hundred seventy-one thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 8.1591940271712 × 10¹³

Factors of 81591940271712

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1295

Divisors of 81591940271712

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 17 24 26 32 34 39 48 51 52 68 78 79 96 102 104 136 156 158 204 208 221 237 257 272 307 312 316 408 416 442 474 514 544 614 617 624 632 663 771 816 884 921 948 1027 1028 1228 1234 1248 1264 1326 1343 1542 1632 1768 1842 1851 1896 2054 2056 2456 2468 2528 2652 2686 3081 3084 3341 3536 3684 3702 3792 3991 4029 4108 4112 4369 4912 4936 5219 5304 5372 6162 6168 6682 7072 7368 7404 7584 7982 8021 8058 8216 8224 8738 9824 9872 10023 10438 10489 10608 10744 11973 12324 12336 13107 13364 14736 14808 15657 15964 16042 16116 16432 17459 17476 19744 20046 20303 20876 20978 21216 21488 23946 24063 24253 24648 24672 26214 26728 29472 29616 31314 31467 31928 32084 32232 32864 34918 34952 40092 40606 41752 41956 42976 47892 48126 48506 48743 49296 52377 52428 53456 56797 59232 60909 62628 62934 63856 64168 64464 67847 69836 69904 72759 78899 80184 81212 83504 83912 95784 96252 97012 97486 98592 104754 104856 106912 113594 121818 125256 125868 127712 128336 128928 135694 136357 139672 139808 145518 146229 157798 158569 160368 162424 167008 167824 170391 189419 191568 192504 194024 194972 203541 209508 209712 227188 236697 243636 250512 251736 256672 263939 271388 272714 279344 291036 292458 315289 315596 317138 320736 324848 335648 340782 345151 378838 383136 385008 388048 389944 407082 409071 412301 419016 419424 454376 473394 475707 487272 501024 503472 527878 542776 545428 558688 568257 582072 584916 630578 631192 633659 634276 649696 681564 690302 757676 770016 776096 779888 791817 814164 818142 824602 828631 838032 908752 945867 946788 951414 974544 1006944 1025687 1035453 1055756 1085552 1090856 1136514 1164144 1169832 1236903 1261156 1262384 1267318 1268552 1341283 1363128 1380604 1515352 1559776 1583634 1628328 1636284 1649204 1657262 1676064 1817504 1891734 1893576 1900977 1902828 1949088 2051374 2061397 2070906 2111512 2171104 2181712 2273028 2328288 2339664 2462447 2473806 2485893 2522312 2524768 2534636 2537104 2682566 2695673 2726256 2761208 3030704 3077061 3167268 3220123 3256656 3272568 3298408 3314524 3783468 3787152 3801954 3805656 4023849 4102748 4122794 4141812 4223024 4363424 4486963 4546056 4679328 4924894 4947612 4971786 5044624 5069272 5074208 5359913 5365132 5391346 5452512 5522416 6061408 6154122 6184191 6233021 6334536 6440246 6513312 6545136 6596816 6629048 7387341 7566936 7574304 7603908 7611312 8047698 8087019 8205496 8245588 8283624 8446048 8973926 9092112 9660369 9849788 9895224 9943572 10089248 10138544 10719826 10730264 10772203 10782692 11044832 12308244 12368382 12466042 12526951 12669072 12880492 13090272 13193632 13258096 13460889 14774682 14964101 15133872 15207816 15222624 16079739 16095396 16174038 16410992 16491176 16567248 17436679 17947852 18184224 18699063 19320738 19699576 19790448 19887144 20277088 21439652 21460528 21544406 21565384 24616488 24736764 24932084 25053902 25338144 25760984 26516192 26921778 29549364 29928202 30267744 30415632 32159478 32190792 32316609 32348076 32821984 32982352 33134496 34873358 35043749 35895704 37398126 37580853 38641476 39399152 39580896 39774288 41861599 42879304 42921056 43088812 43130768 44892303 48680683 49232976 49473528 49864168 50107804 51521968 52310037 53843556 59098728 59856404 60831264 64318956 64381584 64633218 64696152 65964704 69746716 70087498 71791408 74796252 75161706 77282952 78798304 79548576 81029273 83723198 85758608 86177624 86261536 89784606 97361366 98465952 98947056 99728336 100215608 103043936 104620074 105131247 105961357 107687112 118197456 119712808 125584797 128637912 128763168 129266436 129392304 139493432 140174996 143582816 146042049 149592504 150323412 154565904 162058546 162850363 167446396 171517216 172355248 179569212 194533313 194722732 197894112 199456672 200431216 209240148 210262494 211922714 212958167 215374224 236394912 239425616 243087819 251169594 254389717 257275824 258532872 258784608 278986864 280349992 292084098 299185008 300646824 309131808 317884071 324117092 325700726 334892792 344710496 359138424 389066626 389445464 400862432 418480296 420524988 423845428 425916334 430748448 478851232 486175638 488551089 502339188 508779434 514551648 517065744 557973728 560699984 583599939 584168196 598370016 601293648 632848879 635768142 638874501 648234184 651401452 669785584 718276848 763169151 778133252 778890928 827571611 836960592 841049976 847690856 851832668 972351276 977102178 1004678376 1017558868 1034131488 1121399968 1167199878 1168336392 1202587296 1265697758 1271536284 1277749002 1296468368 1302802904 1339571168 1377497641 1436553696 1526338302 1556266504 1557781856 1655143222 1673921184 1682099952 1695381712 1703665336 1898546637 1944702552 1954204356 2009356752 2035117736 2334399756 2336672784 2482714833 2531395516 2543072568 2555498004 2592936736 2605605808 2754995282 2768456171 3052676604 3112533008 3307066321 3310286444 3364199904 3390763424 3407330672 3797093274 3845773957 3889405104 3908408712 4018713504 4070235472 4132492923 4668799512 4673345568 4965429666 5062791032 5086145136 5110996008 5211211616 5509990564 5536912342 6105353208 6225066016 6614132642 6620572888 6814661344 7594186548 7691547914 7778810208 7816817424 8140470944 8264985846 8305368513 9337599024 9921198963 9930859332 10125582064 10172290272 10221992016 10758430943 11019981128 11073824684 11537321871 12210706416 13228265284 13241145776 15188373096 15383095828 15633634848 16529971692 16610737026 18675198048 19842397926 19861718664 20251164128 20443984032 21516861886 22039962256 22147649368 23074643742 24421412832 26456530568 26482291552 30376746192 30766191656 32275292829 33059943384 33221474052 39684795852 39723437328 43033723772 44079924512 44295298736 46149287484 49995061441 52913061136 60753492384 61532383312 64550585658 65378157269 66119886768 66442948104 79369591704 79446874656 86067447544 88590597472 92298574968 99990122882 105826122272 123064766624 129101171316 130756314538 132239773536 132885896208 149985184323 158739183408 172134895088 184597149936 196134471807 199980245764 258202342632 261512629076 265771792416 299970368646 317478366816 344269790176 369194299872 392268943614 399960491528 516404685264 523025258152 599940737292 784537887228 799920983056 849916044497 1032809370528 1046050516304 1199881474584 1569075774456 1599841966112 1699832088994 2092101032608 2399762949168 2549748133491 3138151548912 3399664177988 4799525898336 5099496266982 6276303097824 6799328355976 10198992533964 13598656711952 20397985067928 27197313423904 40795970135856 81591940271712
• Sum of all divisors σ(n): 249488174960640
• Sum of proper divisors (its aliquot sum) s(n): 167896234688928
• 81591940271712 is an abundant number, because the sum of its proper divisors (167896234688928) is greater than itself. Its abundance is 86304294417216

Bases of 81591940271712

• Binary: 10010100011010100011010100111011100111001100000₂
• Hexadecimal: 0x4A351A9DCE60
• Base-36: SX6TILGTC

Squares and roots of 81591940271712

• 81591940271712 squared (81591940271712²) is 6657244717302618476387410944
• 81591940271712 cubed (81591940271712³) is 543177513348325485196022121954367562416128
• The square root of 81591940271712 is 9032825.7080335609
• The cube root of 81591940271712 is 43372.6296223647

Scales and comparisons

• 81,591,940,271,712 seconds is equal to 2,594,371 years, 16 weeks, 4 days, 13 hours, 15 minutes, 12 seconds.
• To count from 1 to 81,591,940,271,712 would take you about six million, four hundred eighty-five thousand, nine hundred twenty-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 81591940271712 cubic inches would be around 3614.4 feet tall.

Recreational maths with 81591940271712

• 81591940271712 backwards is 21717204919518
• The number of decimal digits it has is: 14
• The sum of 81591940271712's digits is 57
• More coming soon!