18438318171216

Names of 18438318171216

• Cardinal: 18438318171216 can be written as Eighteen trillion, four hundred thirty-eight billion, three hundred eighteen million, one hundred seventy-one thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 1.8438318171216 × 10¹³

Factors of 18438318171216

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2280

Divisors of 18438318171216

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 17 18 24 27 31 34 36 48 51 54 62 68 72 93 102 108 124 136 144 153 186 193 204 216 233 248 272 279 306 372 386 408 432 459 466 496 527 558 579 612 699 744 772 816 837 918 932 1054 1116 1158 1224 1398 1488 1544 1581 1674 1737 1801 1836 1864 2097 2108 2232 2316 2448 2796 3088 3162 3281 3348 3474 3602 3672 3728 3961 4194 4216 4464 4632 4743 5211 5403 5592 5983 6291 6324 6562 6696 6948 7204 7223 7344 7922 8388 8432 9264 9486 9843 10422 10806 11184 11883 11966 12582 12648 13124 13392 13896 14229 14408 14446 15844 16209 16776 17949 18972 19686 20844 21612 21669 23766 23932 25164 25296 26248 27792 28458 28816 28892 29529 30617 31688 32418 33552 35649 35898 37944 39372 41688 43224 43338 44969 47532 47864 48627 50328 52496 53847 55831 56916 57784 59058 61234 63376 64836 65007 71298 71796 75888 78744 83376 86448 86676 88587 89938 91851 95064 95728 97254 100656 101711 106947 107694 111662 113832 115568 118116 122468 122791 129672 130014 134907 142596 143592 157488 161541 167493 173352 177174 179876 183702 190128 194508 195021 203422 213894 215388 223324 227664 236232 244936 245582 259344 260028 269814 275553 285192 287184 305133 323082 334986 346704 347593 354348 359752 367404 368373 389016 390042 404721 406844 419633 427788 430776 446648 472464 489872 491164 502479 520056 539628 551106 570384 610266 646164 669972 695186 708696 719504 734808 736746 764473 778032 780084 809442 813688 826659 839266 855576 861552 893296 915399 949127 982328 1004958 1040112 1042779 1079256 1102212 1105119 1214163 1220532 1258899 1292328 1339944 1390372 1394039 1417392 1469616 1473492 1507437 1528946 1560168 1618884 1627376 1653318 1678532 1711152 1830798 1898254 1964656 2009916 2085558 2158512 2204424 2210238 2293419 2428326 2441064 2517798 2584656 2679888 2746197 2780744 2788078 2847381 2946984 3014874 3057892 3120336 3128337 3237768 3306636 3315357 3357064 3661596 3776697 3796508 4019832 4171116 4182117 4408848 4420476 4586838 4856652 4882128 5035596 5492394 5561488 5576156 5694762 5893968 5909081 6029748 6115784 6256674 6475536 6613272 6630714 6714128 6880257 7133761 7323192 7553394 7593016 8039664 8342232 8364234 8542143 8840952 9173676 9385011 9713304 10071192 10775383 10984788 11152312 11330091 11389524 11818162 12059496 12231568 12513348 12546351 13008623 13226544 13261428 13760514 14267522 14646384 15106788 15186032 16684464 16728468 17084286 17681904 17727243 18347352 18770022 19426608 20142384 20640771 21401283 21550766 21969576 22304624 22660182 22779048 23636324 23698663 24118992 25026696 25092702 25626429 26017246 26522856 27521028 28535044 30213576 32326149 33456936 34168572 35454486 36694704 37540044 37639053 39025869 41281542 42802566 43101532 43939152 45320364 45558096 47272648 47397326 50053392 50185404 51252858 52034492 53045712 53181729 55042056 57070088 60427152 64203849 64652298 66913872 68337144 70908972 71095989 75080088 75278106 78051738 80989169 82563084 85605132 86203064 90640728 94545296 94794652 96978447 100370808 102505716 104068984 106363458 110084112 114140176 117077607 128407698 129304596 136674288 141817944 142191978 150160176 150556212 156103476 159545187 161978338 165126168 171210264 172406128 181281456 183181511 189589304 192611547 193956894 200741616 205011432 208137968 212726916 213287967 221146591 234155214 242967507 256815396 258609192 283635888 284383956 290935341 301112424 312206952 319090374 323956676 330252336 342420528 351232821 366363022 379178608 385223094 387913788 410022864 425453832 426575934 442293182 468310428 485935014 513630792 517218384 549544533 568767912 581870682 602224848 624413904 638180748 639863901 647913352 663439773 702465642 728902521 732726044 770446188 775827576 850907664 853151868 884586364 936620856 971870028 1027261584 1099089066 1137535824 1163741364 1276361496 1279727802 1295826704 1326879546 1376815873 1404931284 1457805042 1465452088 1540892376 1551655152 1648633599 1706303736 1769172728 1873241712 1943740056 1990319319 2186707563 2198178132 2327482728 2510664239 2552722992 2559455604 2653759092 2753631746 2809862568 2915610084 2930904176 3081784752 3297267198 3412607472 3538345456 3887480112 3980638638 4130447619 4373415126 4396356264 4654965456 4945900797 5021328478 5118911208 5307518184 5507263492 5619725136 5831220168 5970957957 6594534396 7531992717 7961277276 8260895238 8746830252 8792712528 9891801594 10042656956 10237822416 10615036368 11014526984 11662440336 11941915914 12391342857 13189068792 15063985434 15922554552 16521790476 17493660504 19783603188 20085313912 22029053968 22595978151 23883831828 24782685714 26378137584 30127970868 31845109104 33043580952 34987321008 37174028571 39567206376 40170627824 42681292063 45191956302 47767663656 49565371428 60255941736 66087161904 67787934453 74348057142 79134412752 85362584126 90383912604 95535327312 99130742856 120511883472 128043876189 135575868906 148696114284 170725168252 180767825208 198261485712 256087752378 271151737812 297392228568 341450336504 361535650416 384131628567 512175504756 542303475624 594784457136 682900673008 768263257134 1024351009512 1084606951248 1152394885701 1536526514268 2048702019024 2304789771402 3073053028536 4609579542804 6146106057072 9219159085608 18438318171216
• Sum of all divisors σ(n): 58427397550080
• Sum of proper divisors (its aliquot sum) s(n): 39989079378864
• 18438318171216 is an abundant number, because the sum of its proper divisors (39989079378864) is greater than itself. Its abundance is 21550761207648

Bases of 18438318171216

• Binary: 100001100010100000001011001111010010001010000₂
• Hexadecimal: 0x10C50167A450
• Base-36: 6JAG2KQC0

Squares and roots of 18438318171216

• 18438318171216 squared (18438318171216²) is 339971576982994138690918656
• 18438318171216 cubed (18438318171216³) is 6268504105582500046039586341564936605696
• The square root of 18438318171216 is 4293986.2798122679
• The cube root of 18438318171216 is 26418.4358960223

Scales and comparisons

• 18,438,318,171,216 seconds is equal to 586,281 years, 25 weeks, 1 day, 7 hours, 33 minutes, 36 seconds.
• To count from 1 to 18,438,318,171,216 would take you about one million, four hundred sixty-five thousand, seven hundred three 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 18438318171216 cubic inches would be around 2201.5 feet tall.

Recreational maths with 18438318171216

• 18438318171216 backwards is 61217181383481
• 18438318171216 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18438318171216's digits is 54
• More coming soon!