21438138941965568

Names of 21438138941965568

• Cardinal: 21438138941965568 can be written as Twenty-one quadrillion, four hundred thirty-eight trillion, one hundred thirty-eight billion, nine hundred forty-one million, nine hundred sixty-five thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1438138941965568 × 10¹⁶

Factors of 21438138941965568

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 733

Divisors of 21438138941965568

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 4 8 16 32 37 53 64 74 106 128 148 212 256 296 424 592 641 848 1184 1282 1369 1696 1961 2368 2564 2738 2809 3392 3922 4736 5128 5476 5618 6784 7844 9472 10256 10952 11236 13568 15688 20512 21904 22472 23717 31376 33973 41024 43808 44944 47434 62752 67946 72557 82048 87616 89888 94868 103933 125504 135892 145114 148877 164096 175232 179776 189736 207866 251008 271784 290228 297754 350464 359552 379472 410881 415732 502016 543568 580456 595508 719104 758944 821762 831464 877529 1087136 1160912 1191016 1257001 1517888 1643524 1662928 1755058 1800569 2174272 2321824 2382032 2514002 3035776 3287048 3325856 3510116 3601138 3845521 4348544 4643648 4764064 5028004 5508449 6071552 6574096 6651712 7020232 7202276 7691042 8697088 9287296 9528128 10056008 11016898 13148192 13303424 14040464 14404552 15202597 15382084 18574592 19056256 20112016 21776693 22033796 26296384 26606848 28080928 28809104 30405194 30764168 38112512 40224032 43553386 44067592 46509037 52592768 56161856 57618208 60810388 61528336 66621053 80448064 87106772 88135184 93018074 95430157 105185536 112323712 115236416 121620776 123056672 133242106 160896128 174213544 176270368 186036148 190860314 203812613 224647424 230472832 243241552 246113344 266484212 321792256 348427088 352540736 372072296 381720628 407625226 460945664 486483104 492226688 532968424 562496089 696854176 705081472 744144592 763441256 805737641 815250452 972966208 984453376 1065936848 1124992178 1154164729 1393708352 1410162944 1488289184 1526882512 1611475282 1630500904 1945932416 2131873696 2249984356 2308329458 2464978961 2787416704 2976578368 3053765024 3222950564 3261001808 3530915809 3891864832 4263747392 4499968712 4616658916 4929957922 5574833408 5953156736 6107530048 6445901128 6522003616 7061831618 8527494784 8999937424 9233317832 9859915844 11906313472 12215060096 12891802256 13044007232 14123663236 17054989568 17999874848 18466635664 19719831688 24430120192 25783604512 26088014464 28247326472 29812292717 35999749696 36933271328 39439663376 42704094973 51567209024 52176028928 56494652944 59624585434 61170730637 71999499392 73866542656 78879326752 85408189946 103134418048 112989305888 119249170868 122341461274 130643884933 143998998784 147733085312 157758653504 170816379892 206268836096 225978611776 238498341736 244682922548 261287769866 295466170624 315517307008 341632759784 451957223552 476996683472 489365845096 522575539732 631034614016 683265519568 903914447104 953993366944 978731690192 1045151079464 1366531039136 1580051514001 1907986733888 1957463380384 2090302158928 2263317033569 2733062078272 3160103028002 3815973467776 3914926760768 4180604317856 4526634067138 5466124156544 6320206056004 7631946935552 7829853521536 8361208635712 9053268134276 10932248313088 12640412112008 15659707043072 16722417271424 18106536268552 25280824224016 33444834542848 36213072537104 50561648448032 72426145074208 83742730242053 101123296896064 144852290148416 167485460484106 202246593792128 289704580296832 334970920968212 404493187584256 579409160593664 669941841936424 1339883683872848 2679767367745696 5359534735491392 10719069470982784 21438138941965568
• Sum of all divisors σ(n): 44896159290879540
• Sum of proper divisors (its aliquot sum) s(n): 23458020348913972
• 21438138941965568 is an abundant number, because the sum of its proper divisors (23458020348913972) is greater than itself. Its abundance is 2019881406948404

Bases of 21438138941965568

• Binary: 1001100001010011101111110110000010010000000010100000000₂
• Hexadecimal: 0x4C29DFB0480500
• Base-36: 5V36P2HP9FK

Squares and roots of 21438138941965568

• 21438138941965568 squared (21438138941965568²) is 459593801295020563363899297562624
• 21438138941965568 cubed (21438138941965568³) is 9852835769028765636376197900005989477490131730432
• The square root of 21438138941965568 is 146417686.5749680119
• The cube root of 21438138941965568 is 277797.9439504127

Scales and comparisons

• 21,438,138,941,965,568 seconds is equal to 681,666,505 years, 43 weeks, 3 days, 14 hours, 26 minutes, 8 seconds.
• To count from 1 to 21,438,138,941,965,568 would take you about two billion, forty-four million, nine hundred ninety-nine thousand, five hundred seventeen 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 21438138941965568 cubic inches would be around 23149.8 feet tall.

Recreational maths with 21438138941965568

• 21438138941965568 backwards is 86556914983183412
• The number of decimal digits it has is: 17
• The sum of 21438138941965568's digits is 83
• More coming soon!