81977892989800

Names of 81977892989800

• Cardinal: 81977892989800 can be written as Eighty-one trillion, nine hundred seventy-seven billion, eight hundred ninety-two million, nine hundred eighty-nine thousand, eight hundred.

Scientific notation

• Scientific notation: 8.19778929898 × 10¹³

Factors of 81977892989800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2175

Divisors of 81977892989800

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 17 20 25 29 34 40 50 58 68 85 100 116 136 145 170 200 232 233 290 340 425 466 493 580 680 725 850 932 986 1160 1165 1450 1700 1864 1889 1972 2330 2465 2900 3400 3778 3944 3961 4660 4930 5800 5825 6757 7556 7922 9320 9445 9860 11650 12325 13514 15112 15844 18890 19720 19805 23300 24650 27028 31688 32113 33785 37780 39610 46600 47225 49300 54056 54781 64226 67570 75560 79220 94450 98600 99025 109562 114869 128452 135140 158440 160565 168925 188900 198050 219124 229738 256904 270280 273905 321130 337850 377800 396100 438248 440137 459476 547810 574345 642260 675700 792200 802825 880274 918952 931277 1095620 1148690 1284520 1351400 1369525 1605650 1760548 1862554 2191240 2200685 2297380 2739050 2871725 3211300 3521096 3568321 3725108 4401370 4594760 4656385 5478100 5743450 6422600 7136642 7450216 7482329 8802740 9312770 10956200 11003425 11486900 12763973 14273284 14964658 17605480 17841605 18625540 22006850 22973800 23281925 25527946 28546568 29929316 35683210 37251080 37411645 44013700 46563850 51055892 59858632 60661457 63819865 71366420 74823290 88027400 89208025 93127700 102111784 103481309 121322914 127639730 142732840 149646580 178416050 186255400 187058225 206962618 216987541 242645828 255279460 299293160 303307285 319099325 356832100 374116450 413925236 433975082 485291656 510558920 517406545 606614570 638198650 713664200 748232900 827850472 831418793 867950164 1034813090 1084937705 1213229140 1276397300 1496465800 1516536425 1662837586 1735900328 1759182253 2069626180 2169875410 2426458280 2552794600 2587032725 3033072850 3325675172 3518364506 4139252360 4157093965 4339750820 5174065450 5424688525 6066145700 6651350344 7036729012 8314187930 8679501640 8795911265 10348130900 10849377050 12132291400 14073458024 14134119481 16628375860 17591822530 20696261800 20785469825 21698754100 24111144997 28268238962 33256751720 35183645060 41570939650 43397508200 43979556325 48222289994 56536477924 70367290120 70670597405 83141879300 87959112650 96444579988 113072955848 120555724985 141341194810 166283758600 175918225300 192889159976 241111449970 282682389620 351836450600 353352987025 409889464949 482222899940 565364779240 602778624925 706705974050 819778929898 964445799880 1205557249850 1413411948100 1639557859796 2049447324745 2411114499700 2826823896200 3279115719592 4098894649490 4822228999400 8197789298980 10247236623725 16395578597960 20494473247450 40988946494900 81977892989800
• Sum of all divisors σ(n): 209776315811400
• Sum of proper divisors (its aliquot sum) s(n): 127798422821600
• 81977892989800 is an abundant number, because the sum of its proper divisors (127798422821600) is greater than itself. Its abundance is 45820529831800

Bases of 81977892989800

• Binary: 10010101000111011110111001100001110101101101000₂
• Hexadecimal: 0x4A8EF730EB68
• Base-36: T244GVO14

Squares and roots of 81977892989800

• 81977892989800 squared (81977892989800²) is 6720374939047099982904040000
• 81977892989800 cubed (81977892989800³) is 550922177604536859980528800562098792000000
• The square root of 81977892989800 is 9054164.4004181855
• The cube root of 81977892989800 is 43440.9102996029

Scales and comparisons

• 81,977,892,989,800 seconds is equal to 2,606,643 years, 21 weeks, 6 days, 21 hours, 36 minutes, 40 seconds.
• To count from 1 to 81,977,892,989,800 would take you about six million, five hundred sixteen thousand, six hundred eight 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 81977892989800 cubic inches would be around 3620.1 feet tall.

Recreational maths with 81977892989800

• 81977892989800 backwards is 00898929877918
• 81977892989800 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81977892989800's digits is 85
• More coming soon!