1981321664400

Names of 1981321664400

• Cardinal: 1981321664400 can be written as One trillion, nine hundred eighty-one billion, three hundred twenty-one million, six hundred sixty-four thousand, four hundred.

Scientific notation

• Scientific notation: 1.9813216644 × 10¹²

Factors of 1981321664400

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 131130

Divisors of 1981321664400

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 17 18 19 20 24 25 26 30 34 36 38 39 40 45 48 50 51 52 57 60 65 68 72 75 76 78 80 85 90 95 100 102 104 114 117 120 130 136 144 150 152 153 156 170 171 180 190 195 200 204 208 221 225 228 234 240 247 255 260 272 285 300 304 306 312 323 325 340 342 360 380 390 400 408 425 442 450 456 468 475 494 510 520 570 585 600 612 624 646 650 663 680 684 720 741 760 765 780 816 850 855 884 900 912 936 950 969 975 988 1020 1040 1105 1140 1170 1200 1224 1235 1275 1292 1300 1326 1360 1368 1425 1482 1520 1530 1560 1615 1700 1710 1768 1800 1872 1900 1938 1950 1976 1989 2040 2210 2223 2280 2340 2448 2470 2550 2584 2600 2652 2736 2850 2907 2925 2964 3060 3120 3230 3315 3400 3420 3536 3600 3705 3800 3825 3876 3900 3952 3978 4080 4199 4275 4420 4446 4560 4680 4845 4940 5100 5168 5200 5304 5525 5700 5814 5850 5928 6120 6175 6460 6630 6800 6840 7410 7600 7650 7752 7800 7956 8075 8398 8550 8840 8892 9360 9690 9880 9945 10200 10608 11050 11115 11400 11628 11700 11856 12240 12350 12597 12920 13260 13680 14535 14820 15300 15504 15600 15912 16150 16575 16796 17100 17680 17784 18525 19380 19760 19890 20400 20995 22100 22230 22800 23256 23400 24225 24700 25194 25840 26520 29070 29640 30600 31824 32300 33150 33592 34200 35568 37050 37791 38760 39780 41990 44200 44460 46512 46800 48450 49400 49725 50388 53040 55575 58140 59280 61200 62985 64600 66300 67184 68400 72675 74100 75582 77520 79560 83980 88400 88920 96900 98800 99450 100776 104975 111150 116280 125970 129200 131071 132600 145350 148200 151164 159120 167960 177840 188955 193800 198900 201552 209950 222300 232560 251940 262142 265200 290700 296400 302328 314925 335920 377910 387600 393213 397800 419900 444600 503880 524284 581400 604656 629850 655355 755820 786426 795600 839800 889200 944775 1007760 1048568 1162800 1179639 1259700 1310710 1511640 1572852 1679600 1703923 1889550 1966065 2097136 2228207 2359278 2490349 2519400 2621420 3023280 3145704 3276775 3407846 3779100 3932130 4456414 4718556 4980698 5038800 5111769 5242840 5898195 6291408 6553550 6684621 6815692 7471047 7558200 7864260 8519615 8912828 9437112 9830325 9961396 10223538 10485680 11141035 11796390 12451745 13107100 13369242 13631384 14942094 15116400 15335307 15728520 17039230 17825656 18874224 19660650 19922792 20053863 20447076 22282070 22413141 23592780 24903490 25558845 26214200 26738484 27262768 28966691 29490975 29884188 30670614 31457040 32374537 33423105 34078460 35651312 37355235 39321300 39845584 40107726 40894152 42335933 42598075 44564140 44826282 47185560 49806980 51117690 52428400 53476968 55705175 57933382 58981950 59768376 61341228 62258725 64749074 66846210 68156920 74710470 76676535 78642600 80215452 81788304 84671866 85196150 86900073 89128280 89652564 94371120 97123611 99613960 100269315 102235380 106953936 111410350 112065705 115866764 117963900 119536752 122682456 124517450 127007799 127794225 129498148 133692420 136313840 144833455 149420940 153353070 157285200 160430904 161872685 167115525 169343732 170392300 173800146 178256560 179305128 186776175 194247222 199227920 200538630 204470760 211679665 222820700 224131410 231733528 235927800 245364912 249034900 254015598 255588450 258996296 260700219 267384840 289666910 291370833 298841880 306706140 320861808 323745370 334231050 338687464 340784600 347600292 358610256 373552350 381023397 383382675 388494444 401077260 408941520 423359330 434500365 445641400 448262820 463467056 471855600 485618055 498069800 501346575 508031196 511176900 517992592 521400438 534769680 550367129 560328525 579333820 582741666 597683760 613412280 635038995 647490740 668462100 677374928 681569200 695200584 724167275 747104700 762046794 766765350 776988888 802154520 809363425 846718660 869000730 891282800 896525640 971236110 996139600 1002693150 1016062392 1022353800 1042800876 1058398325 1100734258 1120657050 1158667640 1165483332 1226824560 1270077990 1294981480 1303501095 1336924200 1390401168 1448334550 1456854165 1494209400 1524093588 1533530700 1553977776 1604309040 1618726850 1651101387 1693437320 1738001460 1793051280 1905116985 1942472220 2005386300 2032124784 2044707600 2085601752 2116796650 2172501825 2201468516 2241314100 2317335280 2330966664 2428090275 2540155980 2589962960 2607002190 2673848400 2751835645 2896669100 2913708330 2988418800 3048187176 3067061400 3175194975 3237453700 3302202774 3386874640 3476002920 3810233970 3884944440 4010772600 4171203504 4233593300 4345003650 4402937032 4482628200 4661933328 4856180550 4953304161 5080311960 5214004380 5503671290 5793338200 5827416660 6096374352 6134122800 6350389950 6474907400 6517505475 6604405548 6952005840 7284270825 7620467940 7769888880 8021545200 8255506935 8467186600 8690007300 8805874064 8965256400 9525584925 9712361100 9906608322 10160623920 10428008760 11007342580 11586676400 11654833320 12700779900 12949814800 13035010950 13208811096 13759178225 14568541650 15240935880 16511013870 16934373200 17380014600 19051169850 19424722200 19813216644 20856017520 22014685160 23309666640 24766520805 25401559800 26070021900 26417622192 27518356450 29137083300 30481871760 33022027740 34760029200 38102339700 38849444400 39626433288 41277534675 44029370320 49533041610 50803119600 52140043800 55036712900 58274166600 66044055480 76204679400 79252866576 82555069350 99066083220 104280087600 110073425800 116548333200 123832604025 132088110960 152409358800 165110138700 198132166440 220146851600 247665208050 330220277400 396264332880 495330416100 660440554800 990660832200 1981321664400
• Sum of all divisors σ(n): 8252911779840
• Sum of proper divisors (its aliquot sum) s(n): 6271590115440
• 1981321664400 is an abundant number, because the sum of its proper divisors (6271590115440) is greater than itself. Its abundance is 4290268451040

Bases of 1981321664400

• Binary: 11100110101001111111110010101011110010000₂
• Hexadecimal: 0x1CD4FF95790
• Base-36: PA7FRGK0

Squares and roots of 1981321664400

• 1981321664400 squared (1981321664400²) is 3925635537820786227360000
• 1981321664400 cubed (1981321664400³) is 7777946737622869316909512017984000000
• The square root of 1981321664400 is 1407594.2825970841
• The cube root of 1981321664400 is 12559.8657140427

Scales and comparisons

• 1,981,321,664,400 seconds is equal to 62,999 years, 46 weeks, 5 days, 17 hours.
• To count from 1 to 1,981,321,664,400 would take you about one hundred fifty-seven thousand, four hundred ninety-nine 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 1981321664400 cubic inches would be around 1046.7 feet tall.

Recreational maths with 1981321664400

• 1981321664400 backwards is 0044661231891
• 1981321664400 is a Harshad number.
• The number of decimal digits it has is: 13
• The sum of 1981321664400's digits is 45
• More coming soon!