21355421284251500

Names of 21355421284251500

• Cardinal: 21355421284251500 can be written as Twenty-one quadrillion, three hundred fifty-five trillion, four hundred twenty-one billion, two hundred eighty-four million, two hundred fifty-one thousand, five hundred.

Scientific notation

• Scientific notation: 2.13554212842515 × 10¹⁶

Factors of 21355421284251500

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 4140

Divisors of 21355421284251500

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 10 20 25 31 50 62 100 124 125 155 250 310 500 620 743 775 1486 1550 2972 3100 3359 3715 3875 6718 7430 7750 13436 14860 15500 16795 18575 23033 33590 37150 46066 67180 74300 83975 92132 92875 104129 115165 167950 185750 208258 230330 335900 371500 416516 419875 460660 520645 552049 575825 839750 1041290 1104098 1151650 1679500 2082580 2208196 2303300 2495737 2603225 2760245 2879125 4991474 5206450 5520490 5758250 9982948 10412900 11040980 11516500 12478685 13016125 13801225 17113519 24957370 26032250 27602450 34227038 49914740 52064500 55204900 62393425 68454076 69006125 77367847 85567595 124786850 138012250 154735694 171135190 249573700 276024500 309471388 311967125 342270380 386839235 410172407 427837975 623934250 773678470 820344814 855675950 1247868500 1547356940 1640689628 1711351900 1854332591 1934196175 2050862035 2139189875 3708665182 3868392350 4101724070 4278379750 7417330364 7736784700 8203448140 8556759500 9271662955 9670980875 10254310175 12715344617 18543325910 19341961750 20508620350 25430689234 37086651820 38683923500 41017240700 46358314775 50861378468 51271550875 57484310321 63576723085 92716629550 102543101750 114968620642 127153446170 185433259100 205086203500 229937241284 231791573875 254306892340 287421551605 317883615425 463583147750 574843103210 635767230850 927166295500 1149686206420 1271534461700 1377769115113 1437107758025 1589418077125 2755538230226 2874215516050 3178836154250 5511076460452 5748431032100 6357672308500 6888845575565 7185538790125 13777691151130 14371077580250 27555382302260 28742155160500 34444227877825 42710842568503 68888455755650 85421685137006 137776911511300 170843370274012 172221139389125 213554212842515 344442278778250 427108425685030 688884557556500 854216851370060 1067771064212575 2135542128425150 4271084256850300 5338855321062875 10677710642125750 21355421284251500
• Sum of all divisors σ(n): 48224001466368000
• Sum of proper divisors (its aliquot sum) s(n): 26868580182116500
• 21355421284251500 is an abundant number, because the sum of its proper divisors (26868580182116500) is greater than itself. Its abundance is 5513158897865000

Bases of 21355421284251500

• Binary: 1001011110111101010010001111011101011010011011101101100₂
• Hexadecimal: 0x4BDEA47BAD376C
• Base-36: 5U9V53O06ZW

Squares and roots of 21355421284251500

• 21355421284251500 squared (21355421284251500²) is 456054018227861985561915252250000
• 21355421284251500 cubed (21355421284251500³) is 9739225687631705393867732967072700574940875000000
• The square root of 21355421284251500 is 146134942.0373221347
• The cube root of 21355421284251500 is 277440.1950357615

Scales and comparisons

• 21,355,421,284,251,500 seconds is equal to 679,036,340 years, 9 weeks, 3 days, 23 hours, 38 minutes, 20 seconds.
• To count from 1 to 21,355,421,284,251,500 would take you about two billion, thirty-seven million, one hundred nine thousand and twenty 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 21355421284251500 cubic inches would be around 23120 feet tall.

Recreational maths with 21355421284251500

• 21355421284251500 backwards is 00515248212455312
• 21355421284251500 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21355421284251500's digits is 50
• More coming soon!