81342212160

Names of 81342212160

• Cardinal: 81342212160 can be written as Eighty-one billion, three hundred forty-two million, two hundred twelve thousand, one hundred sixty.

Scientific notation

• Scientific notation: 8.134221216 × 10¹⁰

Factors of 81342212160

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 257

Divisors of 81342212160

• Number of divisors d(n): 896
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 23 24 30 32 33 40 44 46 48 53 55 60 64 66 69 71 80 88 89 92 96 106 110 115 120 132 138 142 159 160 165 176 178 184 192 212 213 220 230 240 253 264 265 267 276 284 318 320 330 345 352 355 356 368 424 426 440 445 460 480 506 528 530 534 552 568 583 636 660 690 704 710 712 736 759 781 795 848 852 880 890 920 960 979 1012 1056 1060 1065 1068 1104 1136 1166 1219 1265 1272 1320 1335 1380 1420 1424 1472 1518 1562 1590 1633 1696 1704 1749 1760 1780 1840 1958 2024 2047 2112 2120 2130 2136 2208 2272 2332 2343 2438 2530 2544 2640 2670 2760 2840 2848 2915 2937 3036 3124 3180 3266 3392 3408 3498 3520 3560 3657 3680 3763 3795 3905 3916 4048 4094 4240 4260 4272 4416 4544 4664 4686 4717 4876 4895 4899 5060 5088 5280 5340 5520 5680 5696 5830 5874 6072 6095 6141 6248 6319 6360 6532 6816 6996 7120 7314 7360 7526 7590 7810 7832 8096 8165 8188 8480 8520 8544 8745 9328 9372 9434 9752 9790 9798 10120 10176 10235 10560 10680 11040 11289 11360 11660 11715 11748 12144 12190 12282 12496 12638 12720 13064 13409 13632 13992 14151 14240 14628 14685 15052 15180 15620 15664 16192 16330 16376 16960 17040 17088 17490 17963 18285 18656 18744 18815 18868 18957 19504 19580 19596 20240 20470 21360 22080 22517 22578 22720 23320 23430 23496 23585 24288 24380 24495 24564 24992 25276 25440 26128 26818 27984 28302 28480 29256 29370 30104 30360 30705 31240 31328 31595 32660 32752 34080 34980 35926 36570 37312 37488 37630 37736 37914 39008 39160 39192 40227 40480 40940 41393 42720 45034 45156 46640 46860 46992 47170 48576 48760 48990 49128 49984 50552 50880 51887 52256 53636 53889 55968 56445 56604 58512 58740 60208 60720 61410 62480 62656 63190 65320 65504 67045 67551 68160 69509 69960 70755 71852 73140 74976 75260 75472 75828 78016 78320 78384 80454 80960 81880 82786 85440 86549 89815 90068 90312 93280 93720 93984 94340 94785 97520 97980 98256 101104 103774 104512 107272 107778 108491 111936 112585 112890 113208 117024 117480 120416 121440 122820 124179 124960 126380 130640 131008 134090 135102 139018 139920 141510 143704 145337 146280 149952 150520 150944 151656 155661 156640 156768 160908 163760 165572 173098 179630 180136 180624 186560 187440 187968 188680 189570 195040 195960 196512 201135 202208 206965 207548 208527 214544 215556 216982 225170 225780 226416 234048 234960 240832 242880 245640 248358 249920 252760 259435 259647 261280 268180 269445 270204 278036 279840 283020 287408 290674 292560 301040 301888 303312 311322 313280 313536 321816 325473 327520 331144 334907 337755 346196 347545 359260 360272 361248 374880 377360 379140 390080 391920 393024 402270 404416 413930 415096 417054 429088 431112 432745 433964 436011 450340 451560 452832 469920 491280 496716 505520 518870 519294 522560 536360 538890 540408 542455 556072 559680 566040 574816 581348 585120 602080 606624 620895 622644 643632 650946 655040 662288 669814 675510 692392 695090 718520 720544 722496 726685 749760 754720 758280 778305 783840 804540 827860 830192 834108 858176 862224 865490 867928 872022 900680 903120 905664 939840 952039 982560 993432 1004721 1011040 1037740 1038588 1042635 1072720 1077780 1080816 1084910 1112144 1132080 1149632 1162696 1170240 1193401 1204160 1213248 1241790 1245288 1287264 1298235 1301892 1324576 1339628 1351020 1384784 1390180 1437040 1441088 1453370 1509440 1516560 1556610 1567680 1598707 1609080 1627365 1655720 1660384 1668216 1674535 1724448 1730980 1735856 1744044 1801360 1806240 1904078 1965120 1986864 2009442 2022080 2075480 2077176 2085270 2145440 2155560 2161632 2169820 2180055 2224288 2264160 2325392 2386802 2483580 2490576 2574528 2596470 2603784 2649152 2679256 2702040 2769568 2780360 2856117 2874080 2906740 3033120 3113220 3197414 3218160 3254730 3311440 3320768 3336432 3349070 3448896 3461960 3471712 3488088 3580203 3602720 3612480 3683977 3808156 3973728 4018884 4150960 4154352 4170540 4290880 4311120 4323264 4339640 4360110 4448576 4528320 4650784 4760195 4773604 4796121 4967160 4981152 5023605 5192940 5207568 5358512 5404080 5539136 5560720 5712234 5748160 5813480 5967005 6066240 6226440 6394828 6436320 6509460 6622880 6672864 6698140 6923920 6943424 6976176 7160406 7205440 7367954 7616312 7702861 7947456 7993535 8037768 8301920 8308704 8341080 8622240 8679280 8720220 9301568 9520390 9547208 9592242 9934320 9962304 10047210 10385880 10415136 10717024 10808160 11051931 11121440 11424468 11626960 11934010 12452880 12789656 12872640 13018920 13245760 13345728 13396280 13847840 13952352 14280585 14320812 14735908 15232624 15405722 15987070 16075536 16603840 16617408 16682160 17244480 17358560 17440440 17901015 18419885 19040780 19094416 19184484 19868640 20094420 20771760 20830272 21434048 21616320 22103862 22242880 22848936 23108583 23253920 23868020 23980605 24905760 25579312 26037840 26792560 27695680 27904704 28561170 28641624 29471816 30465248 30811444 31974140 32151072 33364320 34717120 34880880 35802030 36839770 38081560 38188832 38368968 38514305 39737280 40188840 41543520 44207724 45697872 46217166 46507840 47736040 47961210 49811520 51158624 52075680 53585120 55259655 57122340 57283248 58943632 60930496 61622888 63948280 64302144 66728640 69761760 71604060 73679540 76163120 76377664 76737936 77028610 80377680 83087040 84731471 88415448 91395744 92434332 95472080 95922420 102317248 104151360 107170240 110519310 114244680 114566496 115542915 117887264 123245776 127896560 139523520 143208120 147359080 152326240 153475872 154057220 160755360 169462942 176830896 182791488 184868664 190944160 191844840 221038620 228489360 229132992 231085830 235774528 246491552 254194413 255793120 286416240 294718160 304652480 306951744 308114440 321510720 338925884 353661792 369737328 381888320 383689680 423657355 442077240 456978720 462171660 492983104 508388826 511586240 572832480 589436320 616228880 677851768 707323584 739474656 767379360 847314710 884154480 913957440 924343320 1016777652 1145664960 1178872640 1232457760 1270972065 1355703536 1478949312 1534758720 1694629420 1768308960 1848686640 2033555304 2464915520 2541944130 2711407072 3389258840 3536617920 3697373280 4067110608 5083888260 5422814144 6778517680 7394746560 8134221216 10167776520 13557035360 16268442432 20335553040 27114070720 40671106080 81342212160
• Sum of all divisors σ(n): 307168174080
• Sum of proper divisors (its aliquot sum) s(n): 225825961920
• 81342212160 is an abundant number, because the sum of its proper divisors (225825961920) is greater than itself. Its abundance is 144483749760

Bases of 81342212160

• Binary: 1001011110000010111111010100001000000₂
• Hexadecimal: 0x12F05FA840
• Base-36: 11D91WLC

Squares and roots of 81342212160

• 81342212160 squared (81342212160²) is 6616555479082451865600
• 81342212160 cubed (81342212160³) is 538205259547935241784623005696000
• The square root of 81342212160 is 285205.5612361023
• The cube root of 81342212160 is 4332.8334257763

Scales and comparisons

• 81,342,212,160 seconds is equal to 2,586 years, 22 weeks, 2 days, 18 hours, 56 minutes.
• To count from 1 to 81,342,212,160 would take you about five thousand, one hundred seventy-two 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 81342212160 cubic inches would be around 361.1 feet tall.

Recreational maths with 81342212160

• 81342212160 backwards is 06121224318
• 81342212160 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81342212160's digits is 30
• More coming soon!