81007885424800

Names of 81007885424800

• Cardinal: 81007885424800 can be written as Eighty-one trillion, seven billion, eight hundred eighty-five million, four hundred twenty-four thousand, eight hundred.

Scientific notation

• Scientific notation: 8.10078854248 × 10¹³

Factors of 81007885424800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 145

Divisors of 81007885424800

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 59 79 80 100 118 158 160 200 236 295 316 395 400 472 590 632 790 800 944 1180 1264 1475 1580 1888 1975 2360 2528 2950 3160 3481 3950 4661 4720 5900 6241 6320 6962 7900 9322 9440 11800 12482 12640 13924 15800 17405 18644 23305 23600 24964 27848 31205 31600 34810 37288 46610 47200 49928 55696 62410 63200 69620 74576 87025 93220 99856 111392 116525 124820 139240 149152 156025 174050 186440 199712 205379 233050 249640 274999 278480 312050 348100 368219 372880 410758 466100 493039 499280 549998 556960 624100 696200 736438 745760 821516 932200 986078 998560 1026895 1099996 1248200 1374995 1392400 1472876 1643032 1841095 1864400 1972156 2053790 2199992 2465195 2496400 2749990 2784800 2945752 3286064 3682190 3728800 3944312 4107580 4399984 4930390 4992800 5134475 5499980 5891504 6572128 6874975 7364380 7888624 8215160 8799968 9205475 9860780 10268950 10999960 11783008 12325975 13749950 14728760 15777248 16224941 16430320 18410950 19721560 20537900 21724921 21999920 24651950 27499900 29089301 29457520 32449882 32860640 36821900 39443120 41075800 43449842 43999840 49303900 54999800 58178602 58915040 64899764 73643800 78886240 81124705 82151600 86899684 98607800 108624605 109999600 116357204 129799528 145446505 147287600 162249410 164303200 173799368 197215600 217249210 219999200 232714408 259599056 290893010 294575200 324498820 347598736 394431200 405623525 434498420 465428816 519198112 543123025 581786020 648997640 695197472 727232525 811247050 868996840 930857632 1086246050 1163572040 1281770339 1297995280 1454465050 1622494100 1716268759 1737993680 2172492100 2327144080 2563540678 2595990560 2908930100 3244988200 3432537518 3475987360 4344984200 4654288160 5127081356 5817860200 6408851695 6489976400 6865075036 8581343795 8689968400 10254162712 11635720400 12817703390 12979952800 13730150072 17162687590 17379936800 20508325424 23271440800 25635406780 27460300144 32044258475 34325375180 41016650848 42906718975 51270813560 54920600288 64088516950 68650750360 85813437950 101259856781 102541627120 128177033900 137301500720 171626875900 202519713562 205083254240 256354067800 274603001440 343253751800 405039427124 506299283905 512708135600 686507503600 810078854248 1012598567810 1025416271200 1373015007200 1620157708496 2025197135620 2531496419525 3240315416992 4050394271240 5062992839050 8100788542480 10125985678100 16201577084960 20251971356200 40503942712400 81007885424800
• Sum of all divisors σ(n): 203749246713600
• Sum of proper divisors (its aliquot sum) s(n): 122741361288800
• 81007885424800 is an abundant number, because the sum of its proper divisors (122741361288800) is greater than itself. Its abundance is 41733475864000

Bases of 81007885424800

• Binary: 10010011010110100011110001111000001100010100000₂
• Hexadecimal: 0x49AD1E3C18A0
• Base-36: SPQIBF4PS

Squares and roots of 81007885424800

• 81007885424800 squared (81007885424800²) is 6562277500997524276455040000
• 81007885424800 cubed (81007885424800³) is 531596223926550314295526400628500992000000
• The square root of 81007885424800 is 9000438.0684942219
• The cube root of 81007885424800 is 43268.8911069383

Scales and comparisons

• 81,007,885,424,800 seconds is equal to 2,575,800 years, 9 weeks, 3 days, 11 hours, 46 minutes, 40 seconds.
• To count from 1 to 81,007,885,424,800 would take you about six million, four hundred thirty-nine thousand, five hundred 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 81007885424800 cubic inches would be around 3605.7 feet tall.

Recreational maths with 81007885424800

• 81007885424800 backwards is 00842458870018
• The number of decimal digits it has is: 14
• The sum of 81007885424800's digits is 55
• More coming soon!