81920864513376

Names of 81920864513376

• Cardinal: 81920864513376 can be written as Eighty-one trillion, nine hundred twenty billion, eight hundred sixty-four million, five hundred thirteen thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 8.1920864513376 × 10¹³

Factors of 81920864513376

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1346

Divisors of 81920864513376

• 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 43 48 49 54 56 63 72 81 84 86 96 98 108 112 126 129 144 147 162 168 172 189 196 216 224 243 252 258 288 294 301 324 336 344 378 387 392 432 441 486 504 516 567 588 602 648 672 688 729 756 774 784 864 882 903 972 1008 1032 1134 1161 1176 1204 1291 1296 1323 1376 1458 1512 1548 1568 1701 1764 1806 1944 2016 2064 2107 2268 2322 2352 2408 2582 2592 2646 2709 2916 3024 3096 3402 3483 3528 3612 3873 3888 3969 4128 4214 4536 4644 4704 4816 5103 5164 5292 5418 5832 6048 6192 6321 6804 6966 7056 7224 7746 7776 7938 8127 8428 9037 9072 9288 9632 10206 10328 10449 10584 10836 11619 11664 11907 12384 12642 13608 13932 14112 14448 15492 15876 16254 16856 18074 18144 18576 18963 20412 20656 20898 21168 21672 23238 23328 23814 24381 25284 27111 27216 27864 28896 30984 31347 31752 32508 33712 34857 35721 36148 37152 37926 40824 41312 41796 42336 43344 46476 47628 48762 50568 54222 54432 55513 55728 56889 61968 62694 63259 63504 65016 67424 69714 71442 72296 73143 75852 81333 81648 83592 86688 92952 95256 97524 101136 104571 108444 111026 111456 113778 123936 125388 126518 127008 130032 139428 142884 144592 146286 151704 162666 163296 166539 167184 170667 185904 189777 190512 195048 202272 209142 216888 219429 222052 227556 243999 250776 253036 260064 278856 285768 289184 292572 303408 313713 325332 333078 334368 341334 371808 379554 381024 388591 390096 418284 433776 438858 444104 455112 487998 499617 501552 506072 512001 557712 569331 571536 585144 606816 627426 650664 666156 682668 731997 759108 777182 780192 836568 867552 877716 888208 910224 941139 975996 999234 1003104 1012144 1024002 1115424 1138662 1143072 1165773 1170288 1254852 1301328 1332312 1365336 1463994 1498851 1518216 1536003 1554364 1666681 1673136 1707993 1755432 1776416 1820448 1882278 1951992 1998468 2024288 2048004 2195991 2277324 2331546 2340576 2509704 2602656 2664624 2720137 2730672 2927988 2997702 3036432 3072006 3108728 3333362 3346272 3415986 3497319 3510864 3764556 3903984 3996936 4096008 4391982 4496553 4554648 4663092 5000043 5019408 5123979 5329248 5440274 5461344 5855976 5995404 6072864 6144012 6217456 6587973 6666724 6831972 6994638 7021728 7529112 7807968 7993872 8160411 8192016 8783964 8993106 9109296 9326184 10000086 10038816 10247958 10491957 10880548 11666767 11711952 11990808 12288024 12434912 13175946 13333448 13489659 13663944 13989276 15000129 15058224 15371937 15987744 16320822 16384032 17567928 17986212 18218592 18652368 20000172 20495916 20983914 21761096 23333534 23423904 23981616 24481233 24576048 26351892 26666896 26979318 27327888 27978552 30000258 30116448 30743874 31475871 32641644 35000301 35135856 35972424 37304736 40000344 40468977 40991832 41967828 43522192 45000387 46115811 46667068 47963232 48962466 49152096 52703784 53333792 53958636 54655776 55957104 60000516 61487748 62951742 65283288 70000602 70271712 71667283 71944848 73443699 80000688 80937954 81667369 81983664 83935656 87044384 90000774 92231622 93334136 94427613 97924932 105000903 105407568 107917272 111914208 120001032 122975496 125903484 130566576 135001161 140001204 143334566 143889696 146887398 160001376 161875908 163334738 163967328 167871312 180001548 184463244 186668272 188855226 195849864 210001806 210815136 215001849 215834544 220331097 240002064 245002107 245950992 251806968 261133152 270002322 280002408 283282839 286669132 293774796 315002709 323751816 326669476 335742624 360003096 368926488 373336544 377710452 391699728 405003483 420003612 430003698 431669088 440662194 480004128 490004214 491901984 501670981 503613936 540004644 560004816 566565678 573338264 587549592 630005418 645005547 647503632 653338952 660993291 720006192 735006321 737852976 755420904 783399456 810006966 840007224 860007396 881324388 945008127 980008428 1003341962 1007227872 1080009288 1120009632 1133131356 1146676528 1175099184 1215010449 1260010836 1290011094 1295007264 1306677904 1321986582 1440012384 1470012642 1475705952 1505012943 1510841808 1620013932 1680014448 1720014792 1762648776 1890016254 1935016641 1960016856 1982979873 2006683924 2160018576 2205018963 2266262712 2293353056 2350198368 2430020898 2520021672 2580022188 2613355808 2643973164 2835024381 2940025284 3010025886 3021683616 3240027864 3360028896 3440029584 3511696867 3525297552 3780032508 3870033282 3920033712 3965959746 4013367848 4320037152 4410037926 4515038829 4532525424 4860041796 5040043344 5160044376 5287946328 5670048762 5805049923 5880050568 6020051772 6480055728 6615056889 6880059168 7023393734 7050595104 7560065016 7740066564 7840067424 7931919492 8026735696 8505073143 8820075852 9030077658 9065050848 9720083592 10080086688 10320088752 10535090601 10575892656 11340097524 11610099846 11760101136 12040103544 12960111456 13230113778 13545116487 14046787468 15120130032 15480133128 15863838984 16053471392 17010146286 17415149769 17640151704 18060155316 19440167184 19845170667 20640177504 21070181202 21151785312 22680195048 23220199692 23520202272 24080207088 26460227556 27090232974 28093574936 30240260064 30960266256 31605271803 31727677968 34020292572 34830299538 35280303408 36120310632 38880334368 39690341334 40635349461 42140362404 45360390096 46440399384 48160414176 52245449307 52920455112 54180465948 56187149872 59535512001 61920532512 63210543606 63455355936 68040585144 69660599076 70560606816 72240621264 79380682668 81270698922 84280724808 90720780192 92880798768 94815815409 104490898614 105840910224 108360931896 112374299744 119071024002 121906048383 126421087212 136081170288 139321198152 144481242528 158761365336 162541397844 168561449616 185761597536 189631630818 208981797228 211681820448 216721863792 238142048004 243812096766 252842174424 272162340576 278642396304 284447446227 317522730672 325082795688 337122899232 365718145149 379263261636 417963594456 433443727584 476284096008 487624193532 505684348848 557284792608 568894892454 635045461344 650165591376 731436290298 758526523272 835927188912 853342338681 952568192016 975248387064 1011368697696 1137789784908 1300331182752 1462872580596 1517053046544 1671854377824 1706684677362 1905136384032 1950496774128 2275579569816 2560027016043 2925745161192 3034106093088 3413369354724 3900993548256 4551159139632 5120054032086 5851490322384 6826738709448 9102318279264 10240108064172 11702980644768 13653477418896 20480216128344 27306954837792 40960432256688 81920864513376
• Sum of all divisors σ(n): 288056221639956
• Sum of proper divisors (its aliquot sum) s(n): 206135357126580
• 81920864513376 is an abundant number, because the sum of its proper divisors (206135357126580) is greater than itself. Its abundance is 124214492613204

Bases of 81920864513376

• Binary: 10010101000000110110000000001110110110101100000₂
• Hexadecimal: 0x4A81B0076D60
• Base-36: T1DXBLI00

Squares and roots of 81920864513376

• 81920864513376 squared (81920864513376²) is 6711028042618907217282917376
• 81920864513376 cubed (81920864513376³) is 549773219024850434383176435462367854821376
• The square root of 81920864513376 is 9051014.5571298249
• The cube root of 81920864513376 is 43430.8346416957

Scales and comparisons

• 81,920,864,513,376 seconds is equal to 2,604,830 years, 4 weeks, 6 days, 2 hours, 9 minutes, 36 seconds.
• To count from 1 to 81,920,864,513,376 would take you about six million, five hundred twelve thousand and seventy-five 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 81920864513376 cubic inches would be around 3619.2 feet tall.

Recreational maths with 81920864513376

• 81920864513376 backwards is 67331546802918
• 81920864513376 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81920864513376's digits is 63
• More coming soon!