81366420000

Names of 81366420000

• Cardinal: 81366420000 can be written as Eighty-one billion, three hundred sixty-six million, four hundred twenty thousand.

Scientific notation

• Scientific notation: 8.136642 × 10¹⁰

Factors of 81366420000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 599

Divisors of 81366420000

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 25 30 32 34 40 48 50 51 60 68 75 80 85 96 100 102 120 125 136 150 160 170 200 204 240 241 250 255 272 300 331 340 375 400 408 425 480 482 500 510 544 600 625 662 680 723 750 800 816 850 964 993 1000 1020 1200 1205 1250 1275 1324 1360 1446 1500 1632 1655 1700 1875 1928 1986 2000 2040 2125 2400 2410 2500 2550 2648 2720 2892 3000 3310 3400 3615 3750 3856 3972 4000 4080 4097 4250 4820 4965 5000 5100 5296 5627 5784 6000 6025 6375 6620 6800 7230 7500 7712 7944 8160 8194 8275 8500 9640 9930 10000 10200 10592 10625 11254 11568 12000 12050 12291 12750 13240 13600 14460 15000 15888 16388 16550 16881 17000 18075 19280 19860 20000 20400 20485 21250 22508 23136 24100 24582 24825 25500 26480 28135 28920 30000 30125 31776 31875 32776 33100 33762 34000 36150 38560 39720 40800 40970 41375 42500 45016 48200 49164 49650 51000 52960 56270 57840 60000 60250 61455 63750 65552 66200 67524 68000 72300 79440 79771 81940 82750 84405 85000 90032 90375 96400 98328 99300 102000 102425 112540 115680 120500 122910 124125 127500 131104 132400 135048 140675 144600 150625 158880 159542 163880 165500 168810 170000 180064 180750 192800 196656 198600 204000 204850 206875 225080 239313 241000 245820 248250 255000 264800 270096 281350 289200 301250 307275 319084 327760 331000 337620 340000 361500 393312 397200 398855 409700 413750 422025 450160 451875 478626 482000 491640 496500 510000 512125 540192 562700 578400 602500 614550 620625 638168 655520 662000 675240 703375 723000 794400 797710 819400 827500 844050 900320 903750 957252 964000 983280 993000 1020000 1024250 1125400 1196565 1205000 1229100 1241250 1276336 1324000 1350480 1356107 1406750 1446000 1536375 1595420 1638800 1655000 1688100 1807500 1914504 1966560 1986000 1994275 2048500 2110125 2250800 2393130 2410000 2458200 2482500 2552672 2560625 2700960 2712214 2813500 2892000 3072750 3190840 3277600 3310000 3376200 3516875 3615000 3829008 3972000 3988550 4068321 4097000 4220250 4501600 4786260 4820000 4916400 4965000 5121250 5424428 5627000 5982825 6145500 6381680 6620000 6752400 6780535 7033750 7230000 7658016 7681875 7977100 8136642 8194000 8440500 9572520 9832800 9930000 9971375 10242500 10550625 10848856 11254000 11965650 12291000 12763360 13504800 13561070 14067500 14460000 15363750 15954200 16273284 16388000 16881000 19145040 19860000 19942750 20341605 20485000 21101250 21697712 22508000 23931300 24582000 27122140 28135000 29914125 30727500 31908400 32546568 33762000 33902675 38290080 39885500 40683210 40970000 42202500 43395424 47862600 49164000 49856875 54244280 56270000 59828250 61455000 63816800 65093136 67524000 67805350 79771000 81366420 81940000 84405000 95725200 99713750 101708025 108488560 112540000 119656500 122910000 130186272 135610700 149570625 159542000 162732840 168810000 169513375 191450400 199427500 203416050 216977120 239313000 245820000 271221400 299141250 319084000 325465680 337620000 339026750 398855000 406832100 478626000 508540125 542442800 598282500 650931360 678053500 797710000 813664200 847566875 957252000 1017080250 1084885600 1196565000 1356107000 1595420000 1627328400 1695133750 2034160500 2393130000 2542700625 2712214000 3254656800 3390267500 4068321000 4786260000 5085401250 5424428000 6780535000 8136642000 10170802500 13561070000 16273284000 20341605000 27122140000 40683210000 81366420000
• Sum of all divisors σ(n): 284627939904
• Sum of proper divisors (its aliquot sum) s(n): 203261519904
• 81366420000 is an abundant number, because the sum of its proper divisors (203261519904) is greater than itself. Its abundance is 121895099904

Bases of 81366420000

• Binary: 1001011110001110100010000101000100000₂
• Hexadecimal: 0x12F1D10A20
• Base-36: 11DNGRHC

Squares and roots of 81366420000

• 81366420000 squared (81366420000²) is 6620494303616400000000
• 81366420000 cubed (81366420000³) is 538685920115659521288000000000000
• The square root of 81366420000 is 285247.9973636975
• The cube root of 81366420000 is 4333.2632072807

Scales and comparisons

• 81,366,420,000 seconds is equal to 2,587 years, 10 weeks, 2 days, 23 hours, 20 minutes.
• To count from 1 to 81,366,420,000 would take you about five thousand, one hundred seventy-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 81366420000 cubic inches would be around 361.1 feet tall.

Recreational maths with 81366420000

• 81366420000 backwards is 00002466318
• 81366420000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81366420000's digits is 30
• More coming soon!