81910739404000

Names of 81910739404000

• Cardinal: 81910739404000 can be written as Eighty-one trillion, nine hundred ten billion, seven hundred thirty-nine million, four hundred four thousand.

Scientific notation

• Scientific notation: 8.1910739404 × 10¹³

Factors of 81910739404000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 916

Divisors of 81910739404000

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 65 80 100 104 125 127 130 160 200 208 250 254 260 325 400 416 500 508 520 635 650 769 800 1000 1016 1040 1270 1300 1538 1625 1651 2000 2032 2080 2540 2600 3076 3175 3250 3302 3845 4000 4064 5080 5200 6152 6350 6500 6604 7690 8255 9997 10160 10400 12304 12700 13000 13208 15380 15875 16129 16510 19225 19994 20320 24608 25400 26000 26416 30760 31750 32258 33020 38450 39988 41275 49985 50800 52000 52832 61520 63500 64516 66040 76900 79976 80645 82550 96125 97663 99970 101600 123040 127000 129032 132080 153800 159952 161290 165100 192250 195326 199940 206375 209677 249925 254000 258064 264160 307600 319904 322580 330200 384500 390652 399880 403225 412750 419354 488315 499850 508000 516128 615200 645160 660400 769000 781304 799760 806450 825500 838708 976630 999700 1048385 1249625 1269619 1290320 1320800 1538000 1562608 1599520 1612900 1651000 1677416 1953260 1999400 2016125 2048383 2096770 2441575 2499250 2539238 2580640 3076000 3125216 3225800 3302000 3354832 3906520 3998800 4032250 4096766 4193540 4883150 4998500 5078476 5241925 6348095 6451600 6604000 6709664 7813040 7997600 8064500 8193532 8387080 9766300 9997000 10156952 10241915 10483850 12207875 12403201 12696190 12903200 15626080 16129000 16387064 16774160 19532600 19994000 20313904 20483830 20967700 24415750 24806402 25392380 26209625 26628979 31740475 32258000 32774128 33548320 39065200 39988000 40627808 40967660 41935400 48831500 49612804 50784760 51209575 52419250 53257958 62016005 63480950 64516000 65548256 78130400 81935320 83870800 97663000 99225608 101569520 102419150 104838500 106515916 124032010 126961900 133144895 158702375 161241613 163870640 167741600 195326000 198451216 203139040 204838300 209677000 213031832 248064020 253923800 256047875 266289790 310080025 317404750 322483226 327741280 390652000 396902432 409676600 419354000 426063664 496128040 507847600 512095750 532579580 620160050 634809500 644966452 665724475 806208065 819353200 838708000 852127328 992256080 1015695200 1024191500 1065159160 1240320100 1269619000 1289932904 1331448950 1550400125 1575206527 1612416130 1638706400 1984512160 2048383000 2130318320 2480640200 2539238000 2579865808 2662897900 3100800250 3150413054 3224832260 3328622375 4031040325 4096766000 4260636640 4961280400 5078476000 5159731616 5325795800 6201600500 6300826108 6449664520 6657244750 7876032635 8062080650 8193532000 9922560800 10651591600 12403201000 12601652216 12899329040 13314489500 15752065270 16124161300 20155201625 20477684851 21303183200 24806402000 25203304432 25798658080 26628979000 31504130540 32248322600 39380163175 40310403250 40955369702 49612804000 50406608864 53257958000 63008261080 64496645200 78760326350 80620806500 81910739404 102388424255 106515916000 126016522160 128993290400 157520652700 161241613000 163821478808 196900815875 204776848510 252033044320 315041305400 322483226000 327642957616 393801631750 409553697020 511942121275 630082610800 644966452000 655285915232 787603263500 819107394040 1023884242550 1260165221600 1575206527000 1638214788080 2047768485100 2559710606375 3150413054000 3276429576160 4095536970200 5119421212750 6300826108000 8191073940400 10238842425500 16382147880800 20477684851000 40955369702000 81910739404000
• Sum of all divisors σ(n): 218740019097600
• Sum of proper divisors (its aliquot sum) s(n): 136829279693600
• 81910739404000 is an abundant number, because the sum of its proper divisors (136829279693600) is greater than itself. Its abundance is 54918540289600

Bases of 81910739404000

• Binary: 10010100111111101010100100001101000010011100000₂
• Hexadecimal: 0x4A7F548684E0
• Base-36: T199VD9LS

Squares and roots of 81910739404000

• 81910739404000 squared (81910739404000²) is 6709369229709998275216000000
• 81910739404000 cubed (81910739404000³) is 549569394539991883214507247811264000000000
• The square root of 81910739404000 is 9050455.2042424915
• The cube root of 81910739404000 is 43429.0452722773

Scales and comparisons

• 81,910,739,404,000 seconds is equal to 2,604,508 years, 7 weeks, 4 days, 7 hours, 46 minutes, 40 seconds.
• To count from 1 to 81,910,739,404,000 would take you about six million, five hundred eleven thousand, two hundred seventy 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 81910739404000 cubic inches would be around 3619.1 feet tall.

Recreational maths with 81910739404000

• 81910739404000 backwards is 00040493701918
• The number of decimal digits it has is: 14
• The sum of 81910739404000's digits is 46
• More coming soon!