81399792844800

Names of 81399792844800

• Cardinal: 81399792844800 can be written as Eighty-one trillion, three hundred ninety-nine billion, seven hundred ninety-two million, eight hundred forty-four thousand, eight hundred.

Scientific notation

• Scientific notation: 8.13997928448 × 10¹³

Factors of 81399792844800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 2723

Divisors of 81399792844800

• Number of divisors d(n): 540
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 64 72 75 80 90 96 100 108 120 128 135 144 150 160 180 192 200 216 225 240 256 270 288 300 320 360 384 400 432 450 480 512 540 576 600 640 675 720 768 800 864 900 960 1024 1080 1152 1200 1280 1350 1440 1536 1600 1728 1800 1920 2048 2160 2304 2400 2560 2700 2713 2880 3072 3200 3456 3600 3840 4096 4320 4608 4800 5120 5400 5426 5760 6144 6400 6912 7200 7680 8139 8192 8640 9216 9600 10240 10800 10852 11520 12288 12800 13565 13824 14400 15360 16278 16384 17280 18432 19200 20480 21600 21704 23040 24417 24576 25600 27130 27648 28800 30720 32556 34560 36864 38400 40695 40960 43200 43408 46080 48834 49152 51200 54260 55296 57600 61440 65112 67825 69120 73251 73728 76800 81390 81920 86400 86816 92160 97668 102400 108520 110592 115200 122085 122880 130224 135650 138240 146502 147456 153600 162780 172800 173632 184320 195336 203475 204800 217040 221184 230400 244170 245760 260448 271300 276480 293004 307200 325560 345600 347264 366255 368640 390672 406950 409600 434080 442368 460800 488340 520896 542600 552960 586008 610425 614400 651120 691200 694528 732510 737280 781344 813900 868160 921600 976680 1041792 1085200 1105920 1172016 1220850 1228800 1302240 1382400 1389056 1465020 1562688 1627800 1736320 1831275 1843200 1953360 2083584 2170400 2211840 2344032 2441700 2604480 2764800 2778112 2930040 3125376 3255600 3472640 3662550 3686400 3906720 4167168 4340800 4688064 4883400 5208960 5529600 5556224 5860080 6250752 6511200 6945280 7325100 7360369 7813440 8334336 8681600 9376128 9766800 10417920 11059200 11112448 11720160 12501504 13022400 13890560 14650200 14720738 15626880 16668672 17363200 18752256 19533600 20835840 22081107 22224896 23440320 25003008 26044800 27781120 29300400 29441476 31253760 33337344 34726400 36801845 37504512 39067200 41671680 44162214 44449792 46880640 50006016 52089600 55562240 58600800 58882952 62507520 66243321 66674688 69452800 73603690 75009024 78134400 83343360 88324428 93761280 100012032 104179200 110405535 111124480 117201600 117765904 125015040 132486642 133349376 138905600 147207380 150018048 156268800 166686720 176648856 184009225 187522560 198729963 200024064 208358400 220811070 222248960 234403200 235531808 250030080 264973284 277811200 294414760 300036096 312537600 331216605 333373440 353297712 368018450 375045120 397459926 400048128 416716800 441622140 468806400 471063616 500060160 529946568 552027675 555622400 588829520 600072192 625075200 662433210 666746880 706595424 736036900 750090240 794919852 833433600 883244280 937612800 942127232 993649815 1000120320 1059893136 1104055350 1111244800 1177659040 1200144384 1250150400 1324866420 1413190848 1472073800 1500180480 1589839704 1656083025 1666867200 1766488560 1875225600 1884254464 1987299630 2000240640 2119786272 2208110700 2355318080 2500300800 2649732840 2826381696 2944147600 3000360960 3179679408 3312166050 3333734400 3532977120 3750451200 3768508928 3974599260 4239572544 4416221400 4710636160 4968249075 5000601600 5299465680 5652763392 5888295200 6000721920 6359358816 6624332100 7065954240 7500902400 7537017856 7949198520 8479145088 8832442800 9421272320 9936498150 10001203200 10598931360 11305526784 11776590400 12718717632 13248664200 14131908480 15001804800 15074035712 15898397040 16958290176 17664885600 18842544640 19872996300 21197862720 22611053568 23553180800 25437435264 26497328400 28263816960 30003609600 30148071424 31796794080 33916580352 35329771200 37685089280 39745992600 42395725440 45222107136 47106361600 50874870528 52994656800 56527633920 60296142848 63593588160 67833160704 70659542400 75370178560 79491985200 84791450880 90444214272 94212723200 101749741056 105989313600 113055267840 120592285696 127187176320 135666321408 141319084800 150740357120 158983970400 169582901760 180888428544 188425446400 203499482112 211978627200 226110535680 254374352640 271332642816 282638169600 301480714240 317967940800 339165803520 361776857088 376850892800 406998964224 423957254400 452221071360 508748705280 542665285632 565276339200 602961428480 635935881600 678331607040 753701785600 813997928448 847914508800 904442142720 1017497410560 1085330571264 1130552678400 1271871763200 1356663214080 1507403571200 1627995856896 1695829017600 1808884285440 2034994821120 2261105356800 2543743526400 2713326428160 3014807142400 3255991713792 3391658035200 4069989642240 4522210713600 5087487052800 5426652856320 6783316070400 8139979284480 9044421427200 10174974105600 13566632140800 16279958568960 20349948211200 27133264281600 40699896422400 81399792844800
• Sum of all divisors σ(n): 299170014419640
• Sum of proper divisors (its aliquot sum) s(n): 217770221574840
• 81399792844800 is an abundant number, because the sum of its proper divisors (217770221574840) is greater than itself. Its abundance is 136370428730040

Bases of 81399792844800

• Binary: 10010100000100001011101101111001100000000000000₂
• Hexadecimal: 0x4A085DBCC000
• Base-36: SUQJQZ9C0

Squares and roots of 81399792844800

• 81399792844800 squared (81399792844800²) is 6625926275176353276887040000
• 81399792844800 cubed (81399792844800³) is 539349026204272437326106711809851392000000
• The square root of 81399792844800 is 9022183.3745939791
• The cube root of 81399792844800 is 43338.5556284007

Scales and comparisons

• 81,399,792,844,800 seconds is equal to 2,588,261 years, 32 weeks, 4 days.
• To count from 1 to 81,399,792,844,800 would take you about six million, four hundred seventy thousand, six hundred fifty-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 81399792844800 cubic inches would be around 3611.5 feet tall.

Recreational maths with 81399792844800

• 81399792844800 backwards is 00844829799318
• 81399792844800 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81399792844800's digits is 72
• More coming soon!