161985721338886000

Names of 161985721338886000

• Cardinal: 161985721338886000 can be written as One hundred sixty-one quadrillion, nine hundred eighty-five trillion, seven hundred twenty-one billion, three hundred thirty-eight million, eight hundred eighty-six thousand.

Scientific notation

• Scientific notation: 1.61985721338886 × 10¹⁷

Factors of 161985721338886000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 704

Divisors of 161985721338886000

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 25 38 40 47 50 76 80 94 95 100 125 152 188 190 200 235 250 304 361 376 380 400 470 475 500 631 722 752 760 893 940 950 1000 1175 1262 1444 1520 1786 1805 1880 1900 2000 2350 2375 2524 2888 3155 3572 3610 3760 3800 4465 4700 4750 5048 5776 5875 6310 6859 7144 7220 7600 8930 9025 9400 9500 10096 11750 11989 12620 13718 14288 14440 15775 16967 17860 18050 18800 19000 22325 23500 23978 25240 27436 28880 29657 31550 33934 34295 35720 36100 38000 44650 45125 47000 47956 50480 54872 59314 59945 63100 67868 68590 71440 72200 78875 84835 89300 90250 94000 95912 109744 111625 118628 119890 126200 135736 137180 144400 148285 157750 169670 171475 178600 180500 191824 223250 227791 237256 239780 252400 271472 274360 296570 299725 315500 322373 339340 342950 357200 361000 398161 424175 446500 455582 474512 479560 548720 563483 593140 599450 631000 644746 678680 685900 722000 741425 796322 848350 857375 893000 911164 959120 1126966 1138955 1186280 1198900 1262000 1289492 1357360 1371800 1482850 1498625 1592644 1611865 1696700 1714750 1786000 1822328 1990805 2120875 2253932 2277910 2372560 2397800 2578984 2743600 2817415 2965700 2997250 3185288 3223730 3393400 3429500 3644656 3707125 3981610 4241750 4328029 4507864 4555820 4795600 5157968 5634830 5694775 5931400 5994500 6370576 6447460 6786800 6859000 7414250 7565059 7963220 8059325 8483500 8656058 9015728 9111640 9954025 10706177 11269660 11389550 11862800 11989000 12894920 13718000 14087075 14828500 15130118 15926440 16118650 16967000 17312116 18223280 18713567 19908050 21412354 21640145 22539320 22779100 23978000 25789840 28174150 28473875 29657000 30260236 31852880 32237300 33934000 34624232 37427134 37825295 39816100 40296625 42824708 43280290 45078640 45558200 49770125 53530885 56348300 56947750 59314000 60520472 64474600 69248464 70435375 74854268 75650590 79632200 80593250 85649416 86560580 91116400 93567835 99540250 107061770 108200725 112696600 113895500 121040944 128949200 140870750 143736121 149708536 151301180 159264400 161186500 171298832 173121160 187135670 189126475 199080500 203417363 214123540 216401450 225393200 227791000 251239591 267654425 281741500 287472242 299417072 302602360 322373000 346242320 355557773 374271340 378252950 398161000 406834726 428247080 432802900 455582000 467839175 502479182 535308850 541003625 563483000 574944484 605204720 644746000 711115546 718680605 748542680 756505900 796322000 813669452 856494160 865605800 935678350 945632375 1004958364 1017086815 1070617700 1082007250 1126966000 1149888968 1256197955 1338272125 1422231092 1437361210 1497085360 1513011800 1627338904 1731211600 1777788865 1871356700 1891264750 2009916728 2034173630 2141235400 2164014500 2299777936 2339195875 2512395910 2676544250 2730986299 2844462184 2874722420 3026023600 3254677808 3555577730 3593403025 3742713400 3782529500 4019833456 4068347260 4282470800 4328029000 4678391750 4773552229 5024791820 5085434075 5353088500 5461972598 5688924368 5749444840 6280989775 6755597687 7111155460 7186806050 7485426800 7565059000 8136694520 8656058000 8888944325 9356783500 9547104458 10049583640 10170868150 10706177000 10923945196 11498889680 11808260777 12561979550 13511195374 13654931495 14222310920 14373612100 15130118000 16273389040 17777888650 17967015125 18713567000 19094208916 20099167280 20341736300 21412354000 21847890392 23616521554 23867761145 25123959100 25427170375 27022390748 27309862990 28444621840 28747224200 31404948875 33777988435 35555777300 35934030250 37427134000 38188417832 40683472600 43695780784 44444721625 47233043108 47735522290 50247918200 50854340750 54044781496 54619725980 57494448400 59041303885 62809897750 67555976870 68274657475 71111554600 71868060500 76376835664 81366945200 88889443250 90697492351 94466086216 95471044580 100495836400 101708681500 108089562992 109239451960 118082607770 119338805725 125619795500 128356356053 135111953740 136549314950 142223109200 143736121000 168889942175 177778886500 181394984702 188932172432 190942089160 203417363000 218478903920 224356954763 236165215540 238677611450 251239591000 256712712106 270223907480 273098629900 287472242000 295206519425 337779884350 341373287375 355557773000 362789969404 381884178320 406834726000 448713909526 453487461755 472330431080 477355222900 502479182000 513425424212 540447814960 546197259800 590413038850 596694028625 641781780265 675559768700 682746574750 711115546000 725579938808 844449710875 897427819052 906974923510 944660862160 954710445800 1026850848424 1092394519600 1121784773815 1180826077700 1193388057250 1283563560530 1351119537400 1365493149500 1451159877616 1476032597125 1688899421750 1723252354669 1794855638104 1813949847020 1909420891600 2053701696848 2243569547630 2267437308775 2361652155400 2386776114500 2567127121060 2702239074800 2730986299000 2952065194250 3208908901325 3377798843500 3446504709338 3589711276208 3627899694040 4262782140497 4487139095260 4534874617550 4723304310800 4773552229000 5134254242120 5461972598000 5608923869075 5904130388500 6417817802650 6755597687000 6893009418676 7255799388080 8525564280994 8616261773345 8974278190520 9069749235100 9547104458000 10268508484240 11217847738150 11337186543875 11808260777000 12835635605300 13511195374000 13786018837352 16044544506625 17051128561988 17232523546690 17948556381040 18139498470200 21313910702485 22435695476300 22674373087750 23616521554000 25671271210600 27572037674704 28044619345375 32089089013250 34102257123976 34465047093380 36278996940400 42627821404970 43081308866725 44871390952600 45348746175500 51342542421200 56089238690750 64178178026500 68204514247952 68930094186760 80992860669443 85255642809940 86162617733450 89742781905200 90697492351000 106569553512425 112178477381500 128356356053000 137860188373520 161985721338886 170511285619880 172325235466900 181394984702000 213139107024850 215406544333625 224356954763000 256712712106000 323971442677772 341022571239760 344650470933800 404964303347215 426278214049700 430813088667250 448713909526000 532847767562125 647942885355544 689300941867600 809928606694430 852556428099400 861626177334500 1065695535124250 1295885770711088 1619857213388860 1705112856198800 1723252354669000 2024821516736075 2131391070248500 3239714426777720 3446504709338000 4049643033472150 4262782140497000 6479428853555440 8099286066944300 8525564280994000 10124107583680375 16198572133888600 20248215167360750 32397144267777200 40496430334721500 80992860669443000 161985721338886000
• Sum of all divisors σ(n): 422905159160340480
• Sum of proper divisors (its aliquot sum) s(n): 260919437821454480
• 161985721338886000 is an abundant number, because the sum of its proper divisors (260919437821454480) is greater than itself. Its abundance is 98933716482568480

Bases of 161985721338886000

• Binary: 1000111111011111010010011111000011000101101111011101110000₂
• Hexadecimal: 0x23F7D27C316F770
• Base-36: 18AZ592HSCJ4

Squares and roots of 161985721338886000

• 161985721338886000 squared (161985721338886000²) is 26239373917679227208455720996000000
• 161985721338886000 cubed (161985721338886000³) is 4250403911536020735551159853876623581450456000000000
• The square root of 161985721338886000 is 402474497.7497158141
• The cube root of 161985721338886000 is 545120.1612993459

Scales and comparisons

• 161,985,721,338,886,000 seconds is equal to 5,150,644,883 years, 43 weeks, 5 days, 14 hours, 6 minutes, 40 seconds.
• To count from 1 to 161,985,721,338,886,000 would take you about fifteen billion, four hundred fifty-one million, nine hundred thirty-four thousand, six hundred fifty-one 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 161985721338886000 cubic inches would be around 45426.7 feet tall.

Recreational maths with 161985721338886000

• 161985721338886000 backwards is 000688833127589161
• 161985721338886000 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 161985721338886000's digits is 76
• More coming soon!