81364488880

Names of 81364488880

• Cardinal: 81364488880 can be written as Eighty-one billion, three hundred sixty-four million, four hundred eighty-eight thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 8.136448888 × 10¹⁰

Factors of 81364488880

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 765

Divisors of 81364488880

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 37 38 40 61 74 76 80 95 122 148 152 185 190 244 296 304 305 370 380 488 592 610 641 703 740 760 976 1159 1220 1282 1369 1406 1480 1520 2257 2318 2440 2564 2738 2812 2960 3205 3515 4514 4636 4880 5128 5476 5624 5795 6410 6845 7030 9028 9272 10256 10952 11248 11285 11590 12179 12820 13690 14060 18056 18544 21904 22570 23180 23717 24358 25640 26011 27380 28120 36112 39101 42883 45140 46360 47434 48716 51280 52022 54760 56240 60895 78202 83509 85766 90280 92720 94868 97432 104044 109520 118585 121790 130055 156404 167018 171532 180560 189736 194864 195505 208088 214415 237170 243580 260110 312808 334036 343064 379472 391010 416176 417545 428830 450623 474340 487160 520220 625616 668072 686128 742919 782020 835090 857660 877529 901246 948680 974320 1040440 1336144 1446737 1485838 1564040 1586671 1670180 1715320 1755058 1802492 1897360 2080880 2253115 2893474 2971676 3128080 3173342 3340360 3430640 3510116 3604984 3714595 4387645 4506230 5786948 5943352 6346684 6680720 7020232 7209968 7233685 7429190 7933355 8775290 9012460 11573896 11886704 12693368 14040464 14467370 14858380 15866710 16673051 17550580 18024920 23147792 25386736 27488003 28934740 29716760 31733420 33346102 35101160 36049840 53529269 54976006 57869480 59433520 63466840 66692204 70202320 83365255 107058538 109952012 115738960 126933680 133384408 137440015 166730510 214117076 219904024 266768816 267646345 274880030 333461020 428234152 439808048 535292690 549760060 666922040 856468304 1017056111 1070585380 1099520120 1333844080 2034112222 2141170760 2199040240 4068224444 4282341520 5085280555 8136448888 10170561110 16272897776 20341122220 40682244440 81364488880
• Sum of all divisors σ(n): 208335728160
• Sum of proper divisors (its aliquot sum) s(n): 126971239280
• 81364488880 is an abundant number, because the sum of its proper divisors (126971239280) is greater than itself. Its abundance is 45606750400

Bases of 81364488880

• Binary: 1001011110001101100111001001010110000₂
• Hexadecimal: 0x12F1B392B0
• Base-36: 11DMBDF4

Squares and roots of 81364488880

• 81364488880 squared (81364488880²) is 6620180050703643654400
• 81364488880 cubed (81364488880³) is 538647566119074450293911363072000
• The square root of 81364488880 is 285244.6123592871
• The cube root of 81364488880 is 4333.2289256633

Scales and comparisons

• 81,364,488,880 seconds is equal to 2,587 years, 7 weeks, 1 day, 14 hours, 54 minutes, 40 seconds.
• To count from 1 to 81,364,488,880 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 81364488880 cubic inches would be around 361.1 feet tall.

Recreational maths with 81364488880

• 81364488880 backwards is 08888446318
• The number of decimal digits it has is: 11
• The sum of 81364488880's digits is 58
• More coming soon!