21394781440000

Names of 21394781440000

• Cardinal: 21394781440000 can be written as Twenty-one trillion, three hundred ninety-four billion, seven hundred eighty-one million, four hundred forty thousand.

Scientific notation

• Scientific notation: 2.139478144 × 10¹³

Factors of 21394781440000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 17431

Divisors of 21394781440000

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 31 32 40 50 62 64 80 100 124 125 128 155 160 200 248 250 256 310 320 400 496 500 512 620 625 640 775 800 961 992 1000 1024 1240 1250 1280 1550 1600 1922 1984 2000 2048 2480 2500 2560 3100 3200 3844 3875 3968 4000 4805 4960 5000 5120 6200 6400 7688 7750 7936 8000 9610 9920 10000 10240 12400 12800 15376 15500 15872 16000 17393 19220 19375 19840 20000 24025 24800 25600 30752 31000 31744 32000 34786 38440 38750 39680 40000 48050 49600 51200 61504 62000 63488 64000 69572 76880 77500 79360 80000 86965 96100 99200 120125 123008 124000 128000 139144 153760 155000 158720 160000 173930 192200 198400 240250 246016 248000 256000 278288 307520 310000 317440 320000 347860 384400 396800 434825 480500 492032 496000 539183 556576 600625 615040 620000 640000 695720 768800 793600 869650 961000 984064 992000 1078366 1113152 1201250 1230080 1240000 1280000 1391440 1537600 1587200 1739300 1922000 1968128 1984000 2156732 2174125 2226304 2402500 2460160 2480000 2695915 2782880 3075200 3478600 3844000 3968000 4313464 4348250 4452608 4805000 4920320 4960000 5391830 5565760 6150400 6957200 7688000 7936000 8626928 8696500 8905216 9610000 9840640 9920000 10783660 10870625 11131520 12300800 13479575 13914400 15376000 16714673 17253856 17393000 17810432 19220000 19840000 21567320 21741250 22263040 24601600 26959150 27828800 30752000 33429346 34507712 34786000 35620864 38440000 39680000 43134640 43482500 44526080 49203200 53918300 55657600 61504000 66858692 67397875 69015424 69572000 76880000 83573365 86269280 86965000 89052160 107836600 111315200 123008000 133717384 134795750 138030848 139144000 153760000 167146730 172538560 173930000 178104320 215673200 222630400 246016000 267434768 269591500 276061696 278288000 307520000 334293460 336989375 345077120 347860000 417866825 431346400 445260800 534869536 539183000 552123392 556576000 615040000 668586920 673978750 690154240 695720000 835733650 862692800 890521600 1069739072 1078366000 1104246784 1113152000 1230080000 1337173840 1347957500 1380308480 1391440000 1671467300 1725385600 2089334125 2139478144 2156732000 2226304000 2674347680 2695915000 2760616960 2782880000 3342934600 3450771200 4178668250 4278956288 4313464000 4452608000 5348695360 5391830000 5521233920 5565760000 6685869200 6901542400 8357336500 8557912576 8626928000 10446670625 10697390720 10783660000 11131520000 13371738400 13803084800 16714673000 17115825152 17253856000 20893341250 21394781440 21567320000 22263040000 26743476800 27606169600 33429346000 34231650304 34507712000 41786682500 42789562880 43134640000 53486953600 66858692000 69015424000 83573365000 85579125760 86269280000 106973907200 133717384000 138030848000 167146730000 171158251520 172538560000 213947814400 267434768000 334293460000 345077120000 427895628800 534869536000 668586920000 690154240000 855791257600 1069739072000 1337173840000 2139478144000 2674347680000 4278956288000 5348695360000 10697390720000 21394781440000
• Sum of all divisors σ(n): 55239998003190
• Sum of proper divisors (its aliquot sum) s(n): 33845216563190
• 21394781440000 is an abundant number, because the sum of its proper divisors (33845216563190) is greater than itself. Its abundance is 12450435123190

Bases of 21394781440000

• Binary: 100110111010101011100010110010000100000000000₂
• Hexadecimal: 0x13755C590800
• Base-36: 7L0MKH0CG

Squares and roots of 21394781440000

• 21394781440000 squared (21394781440000²) is 457736672865368473600000000
• 21394781440000 cubed (21394781440000³) is 9793176073027337037738409984000000000000
• The square root of 21394781440000 is 4625449.3230387899
• The cube root of 21394781440000 is 27761.0540340093

Scales and comparisons

• 21,394,781,440,000 seconds is equal to 680,287 years, 45 weeks, 2 days, 4 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,394,781,440,000 would take you about one million, seven hundred thousand, seven hundred nineteen 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 21394781440000 cubic inches would be around 2313.4 feet tall.

Recreational maths with 21394781440000

• 21394781440000 backwards is 00004418749312
• The number of decimal digits it has is: 14
• The sum of 21394781440000's digits is 43
• More coming soon!