1991178215664400

Names of 1991178215664400

• Cardinal: 1991178215664400 can be written as One quadrillion, nine hundred ninety-one trillion, one hundred seventy-eight billion, two hundred fifteen million, six hundred sixty-four thousand, four hundred.

Scientific notation

• Scientific notation: 1.9911782156644 × 10¹⁵

Factors of 1991178215664400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 18780

Divisors of 1991178215664400

• Number of divisors d(n): 405
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 25 28 34 35 40 49 50 56 68 70 80 85 98 100 112 119 136 140 170 175 196 200 238 245 272 280 289 340 350 392 400 425 476 490 560 578 595 680 700 784 833 850 952 980 1156 1190 1225 1360 1400 1445 1666 1700 1904 1960 2023 2312 2380 2450 2800 2890 2975 3332 3400 3920 4046 4165 4624 4760 4900 5780 5950 6664 6800 7225 8092 8330 9520 9800 10115 11560 11900 13328 14161 14450 16184 16660 18749 19600 20230 20825 23120 23800 28322 28900 32368 33320 37498 40460 41650 47600 50575 56644 57800 66640 70805 74996 80920 83300 93745 101150 113288 115600 131243 141610 149992 161840 166600 187490 202300 226576 262486 283220 299984 318733 333200 354025 374980 404600 468725 524972 566440 637466 656215 708050 749960 809200 918701 937450 1049944 1132880 1274932 1312430 1416100 1499920 1593665 1837402 1874900 2099888 2231131 2549864 2624860 2832200 3187330 3281075 3674804 3749800 4462262 4593505 5099728 5249720 5418461 5664400 6374660 6562150 7349608 7499600 7968325 8924524 9187010 10499440 10836922 11155655 12749320 13124300 14699216 15617917 15936650 17849048 18374020 21673844 22311310 22967525 25498640 26248600 27092305 31235834 31873300 35698096 36748040 37929227 43347688 44622620 45935050 52497200 54184610 55778275 62471668 63746600 73496080 75858454 78089585 86695376 89245240 91870100 108369220 111556550 124943336 127493200 135461525 151716908 156179170 178490480 183740200 189646135 216738440 223113100 249886672 265504589 270923050 303433816 312358340 351525001 367480400 379292270 390447925 433476880 446226200 531009178 541846100 606867632 624716680 703050002 758584540 780895850 892452400 948230675 1062018356 1083692200 1249433360 1327522945 1406100004 1517169080 1561791700 1757625005 1896461350 2124036712 2167384400 2460675007 2655045890 2812200008 3034338160 3123583400 3515250010 3792922700 4248073424 4921350014 5310091780 5624400016 5975925017 6247166800 6637614725 7030500020 7585845400 8788125025 9842700028 10620183560 11951850034 12303375035 13275229450 14061000040 15171690800 17224725049 17576250050 19685400056 21240367120 23903700068 24606750070 26550458900 28122000080 29879625085 34449450098 35152500100 39370800112 41831475119 47807400136 49213500140 53100917800 59759250170 61516875175 68898900196 70305000200 83662950238 86123625245 95614800272 98427000280 101590725289 106201835600 119518500340 123033750350 137797800392 140610000400 149398125425 167325900476 172247250490 196854000560 203181450578 209157375595 239037000680 246067500700 275595600784 292820325833 298796250850 334651800952 344494500980 406362901156 418314751190 430618126225 478074001360 492135001400 507953626445 585640651666 597592501700 669303601904 688989001960 711135077023 812725802312 836629502380 861236252450 984270002800 1015907252890 1045786877975 1171281303332 1195185003400 1377978003920 1422270154046 1464101629165 1625451604624 1673259004760 1722472504900 2031814505780 2091573755950 2342562606664 2390370006800 2539768132225 2844540308092 2928203258330 3346518009520 3444945009800 3555675385115 4063629011560 4183147511900 4685125213328 4977945539161 5079536264450 5689080616184 5856406516660 6889890019600 7111350770230 7320508145825 8127258023120 8366295023800 9955891078322 10159072528900 11378161232368 11712813033320 14222701540460 14641016291650 16732590047600 17778376925575 19911782156644 20318145057800 23425626066640 24889727695805 28445403080920 29282032583300 35556753851150 39823564313288 40636290115600 49779455391610 56890806161840 58564065166600 71113507702300 79647128626576 99558910783220 117128130333200 124448638479025 142227015404600 199117821566440 248897276958050 284454030809200 398235643132880 497794553916100 995589107832200 1991178215664400
• Sum of all divisors σ(n): 5911749198897789
• Sum of proper divisors (its aliquot sum) s(n): 3920570983233389
• 1991178215664400 is an abundant number, because the sum of its proper divisors (3920570983233389) is greater than itself. Its abundance is 1929392767568989

Bases of 1991178215664400

• Binary: 111000100101111011101001110001110101010101100010000₂
• Hexadecimal: 0x712F74E3AAB10
• Base-36: JLTAN6WPHS

Squares and roots of 1991178215664400

• 1991178215664400 squared (1991178215664400²) is 3964790686536463837533427360000
• 1991178215664400 cubed (1991178215664400³) is 7894604844700507528566686467174171537984000000
• 1991178215664400 is a perfect square number. Its square root is 44622620
• The cube root of 1991178215664400 is 125806.5860905423

Scales and comparisons

• 1,991,178,215,664,400 seconds is equal to 63,313,308 years, 7 weeks, 1 day, 18 hours, 46 minutes, 40 seconds.
• To count from 1 to 1,991,178,215,664,400 would take you about one hundred eighty-nine million, nine hundred thirty-nine thousand, nine hundred twenty-four 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 1991178215664400 cubic inches would be around 10483.9 feet tall.

Recreational maths with 1991178215664400

• 1991178215664400 backwards is 0044665128711991
• The number of decimal digits it has is: 16
• The sum of 1991178215664400's digits is 64
• More coming soon!