81949018376736

Names of 81949018376736

• Cardinal: 81949018376736 can be written as Eighty-one trillion, nine hundred forty-nine billion, eighteen million, three hundred seventy-six thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 8.1949018376736 × 10¹³

Factors of 81949018376736

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1076

Divisors of 81949018376736

• Number of divisors d(n): 756
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 72 73 81 84 96 98 108 112 126 144 146 147 162 168 189 196 216 219 224 243 252 288 292 294 324 336 378 392 432 438 441 486 504 511 567 584 588 648 657 672 729 756 784 864 876 882 972 991 1008 1022 1134 1168 1176 1296 1314 1323 1458 1512 1533 1568 1701 1752 1764 1944 1971 1982 2016 2044 2268 2336 2352 2592 2628 2646 2916 2973 3024 3066 3402 3504 3528 3577 3888 3942 3964 3969 4088 4536 4599 4704 5103 5256 5292 5832 5913 5946 6048 6132 6804 6937 7008 7056 7154 7776 7884 7928 7938 8176 8919 9072 9198 10206 10512 10584 10731 11664 11826 11892 11907 12264 13608 13797 13874 14112 14308 15768 15856 15876 16352 17739 17838 18144 18396 20412 20811 21024 21168 21462 23328 23652 23784 23814 24528 26757 27216 27594 27748 28616 31536 31712 31752 32193 35478 35676 35721 36792 40824 41391 41622 42336 42924 47304 47568 47628 48559 49056 53217 53514 54432 55188 55496 57232 62433 63072 63504 64386 70956 71352 71442 72343 73584 80271 81648 82782 83244 85848 94608 95136 95256 96579 97118 106434 107028 110376 110992 114464 124173 124866 127008 128772 141912 142704 142884 144686 145677 147168 160542 163296 165564 166488 171696 187299 189216 190512 193158 194236 212868 214056 217029 220752 221984 240813 248346 249732 257544 283824 285408 285768 289372 289737 291354 321084 331128 332976 343392 372519 374598 381024 386316 388472 425736 428112 434058 437031 441504 481626 496692 499464 506401 515088 561897 567648 571536 578744 579474 582708 642168 651087 662256 665952 722439 745038 749196 772632 776944 851472 856224 868116 869211 874062 963252 982081 993384 998928 1012802 1030176 1123794 1143072 1157488 1158948 1165416 1284336 1302174 1311093 1324512 1444878 1490076 1498392 1519203 1545264 1553888 1685691 1702944 1736232 1738422 1748124 1926504 1953261 1964162 1986768 1997856 2025604 2247588 2314976 2317896 2330832 2568672 2604348 2607633 2622186 2889756 2946243 2980152 2996784 3038406 3090528 3371382 3472464 3476844 3496248 3544807 3853008 3906522 3928324 3933279 3973536 4051208 4495176 4557609 4635792 4661664 5057073 5208696 5215266 5244372 5779512 5859783 5892486 5960304 5993568 6076812 6742764 6874567 6944928 6953688 6992496 7089614 7706016 7813044 7856648 7866558 8102416 8838729 8990352 9115218 9271584 10114146 10417392 10430532 10488744 10634421 11559024 11719566 11784972 11799837 11920608 12153624 13485528 13672827 13749134 13907376 13984992 14179228 15626088 15713296 15733116 16204832 17579349 17677458 17980704 18230436 20228292 20623701 20834784 20861064 20977488 21268842 23118048 23439132 23569944 23599674 24307248 26516187 26971056 27345654 27498268 27814752 28358456 31252176 31426592 31466232 31903263 35158698 35354916 35399511 36460872 40456584 41018481 41247402 41722128 41954976 42537684 46878264 47139888 47199348 48121969 48614496 52738047 53032374 53942112 54691308 54996536 56716912 61871103 62504352 62932464 63806526 70317396 70709832 70799022 71691913 72921744 79548561 80913168 82036962 82494804 83444256 85075368 93756528 94279776 94398696 95709789 96243938 105476094 106064748 109382616 109993072 113433824 123055443 123742206 125864928 127613052 140634792 141419664 141598044 143383826 144365907 145843488 159097122 161826336 164073924 164989608 170150736 185613309 187513056 188797392 191419578 192487876 210952188 212129496 215075739 218765232 219986144 238645683 246110886 247484412 255226104 281269584 282839328 283196088 286767652 287129367 288731814 318194244 328147848 329979216 340301472 369166329 371226618 377594784 382839156 384975752 421904376 424258992 430151478 433097721 437530464 477291366 492221772 494968824 501843391 510452208 556839927 562539168 566392176 573535304 574258734 577463628 636388488 645227217 656295696 659958432 715937049 738332658 742453236 765678312 769951504 843808752 848517984 860302956 861388101 866195442 954582732 984443544 989937648 1003686782 1020904416 1113679854 1132784352 1147070608 1148517468 1154927256 1272776976 1290454434 1299293163 1312591392 1431874098 1476665316 1484906472 1505530173 1531356624 1539903008 1670519781 1687617504 1720605912 1722776202 1732390884 1909165464 1935681651 1968887088 1979875296 2007373564 2227359708 2294141216 2297034936 2309854512 2545553952 2580908868 2584164303 2598586326 2863748196 2953330632 2969812944 3011060346 3062713248 3341039562 3441211824 3445552404 3464781768 3512903737 3818330928 3871363302 3897879489 3937774176 4014747128 4454719416 4516590519 4594069872 4619709024 5011559343 5161817736 5168328606 5197172652 5727496392 5807044953 5906661264 5939625888 6022120692 6682079124 6882423648 6891104808 6929563536 7025807474 7636661856 7742726604 7795758978 8029494256 8909438832 9033181038 9188139744 10023118686 10323635472 10336657212 10394345304 10538711211 11454992784 11614089906 11693638467 11813322528 12044241384 13364158248 13549771557 13782209616 13859127072 14051614948 15485453208 15591517956 16058988512 17421134859 17818877664 18066362076 20046237372 20647270944 20673314424 20788690608 21077422422 22909985568 23228179812 23387276934 24088482768 26728316496 27099543114 27564419232 28103229896 30970906416 31183035912 31616133633 34842269718 35080915401 36132724152 40092474744 40649314671 41346628848 41577381216 42154844844 46456359624 46774553868 48176965536 52263404577 53456632992 54199086228 56206459792 61941812832 62366071824 63232267266 69684539436 70161830802 72265448304 80184949488 81298629342 82693257696 84309689688 92912719248 93549107736 94848400899 104526809154 108398172456 112412919584 121947944013 124732143648 126464534532 139369078872 140323661604 144530896608 160369898976 162597258684 168619379376 185825438496 187098215472 189696801798 209053618308 216796344912 243895888026 252929069064 278738157744 280647323208 284545202697 325194517368 337238758752 365843832039 374196430944 379393603596 418107236616 433592689824 487791776052 505858138128 557476315488 561294646416 569090405394 650389034736 731687664078 758787207192 836214473232 853635608091 975583552104 1011716276256 1122589292832 1138180810788 1300778069472 1463375328156 1517574414384 1672428946464 1707271216182 1951167104208 2276361621576 2560906824273 2926750656312 3035148828768 3414542432364 3902334208416 4552723243152 5121813648546 5853501312624 6829084864728 9105446486304 10243627297092 11707002625248 13658169729456 20487254594184 27316339458912 40974509188368 81949018376736
• Sum of all divisors σ(n): 285530861196126
• Sum of proper divisors (its aliquot sum) s(n): 203581842819390
• 81949018376736 is an abundant number, because the sum of its proper divisors (203581842819390) is greater than itself. Its abundance is 121632824442654

Bases of 81949018376736

• Binary: 10010101000100000111110001000010100101000100000₂
• Hexadecimal: 0x4A883E214A20
• Base-36: T1QUXOI00

Squares and roots of 81949018376736

• 81949018376736 squared (81949018376736²) is 6715641612910614632426013696
• 81949018376736 cubed (81949018376736³) is 550340237947984949585236094203397223776256
• The square root of 81949018376736 is 9052569.7112331591
• The cube root of 81949018376736 is 43435.8093846741

Scales and comparisons

• 81,949,018,376,736 seconds is equal to 2,605,725 years, 15 weeks, 3 days, 23 hours, 45 minutes, 36 seconds.
• To count from 1 to 81,949,018,376,736 would take you about six million, five hundred fourteen thousand, three hundred thirteen 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 81949018376736 cubic inches would be around 3619.7 feet tall.

Recreational maths with 81949018376736

• 81949018376736 backwards is 63767381094918
• 81949018376736 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81949018376736's digits is 72
• More coming soon!