81738817783400

Names of 81738817783400

• Cardinal: 81738817783400 can be written as Eighty-one trillion, seven hundred thirty-eight billion, eight hundred seventeen million, seven hundred eighty-three thousand, four hundred.

Scientific notation

• Scientific notation: 8.17388177834 × 10¹³

Factors of 81738817783400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1478

Divisors of 81738817783400

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 8 10 20 25 40 50 61 100 122 200 244 305 317 488 610 634 1093 1220 1268 1525 1585 2186 2440 2536 3050 3170 3721 4372 5465 6100 6340 7442 7925 8744 10930 12200 12680 14884 15850 18605 19337 21860 27325 29768 31700 37210 38674 43720 54650 63400 66673 74420 77348 93025 96685 100489 109300 133346 148840 154696 186050 193370 200978 218600 266692 333365 346481 372100 386740 401956 483425 502445 533384 666730 692962 744200 773480 803912 966850 1004890 1179557 1333460 1385924 1666825 1732405 1933700 2009780 2359114 2512225 2666920 2771848 3333650 3464810 3867400 4019560 4067053 4718228 5024450 5897785 6129829 6667300 6929620 8134106 8662025 9436456 10048900 11795570 12259658 13334600 13859240 16268212 17324050 20097800 20335265 21135341 23591140 24519316 29488925 30649145 32536424 34648100 40670530 42270682 47182280 49038632 58977850 61298290 69296200 81341060 84541364 101676325 105676705 109834477 117955700 122596580 153245725 162682120 169082728 203352650 211353410 219668954 235911400 245193160 306491450 373919569 406705300 422706820 439337908 528383525 549172385 612982900 747839138 813410600 845413640 878675816 1056767050 1098344770 1225965800 1289255801 1495678276 1869597845 2113534100 2196689540 2578511602 2745861925 2991356552 3739195690 4227068200 4393379080 5157023204 5491723850 6446279005 6699903097 7478391380 9347989225 10314046408 10983447700 12892558010 13399806194 14956782760 18695978450 21966895400 25785116020 26799612388 32231395025 33499515485 37391956900 51570232040 53599224776 64462790050 66999030970 74783913800 128925580100 133998061940 167497577425 257851160200 267996123880 334995154850 408694088917 669990309700 817388177834 1339980619400 1634776355668 2043470444585 3269552711336 4086940889170 8173881778340 10217352222925 16347763556680 20434704445850 40869408891700 81738817783400
• Sum of all divisors σ(n): 193998024093510
• Sum of proper divisors (its aliquot sum) s(n): 112259206310110
• 81738817783400 is an abundant number, because the sum of its proper divisors (112259206310110) is greater than itself. Its abundance is 30520388526710

Bases of 81738817783400

• Binary: 10010100101011101001101001100101100011001101000₂
• Hexadecimal: 0x4A574D32C668
• Base-36: SZ2ALOA5K

Squares and roots of 81738817783400

• 81738817783400 squared (81738817783400²) is 6681234332627868089315560000
• 81738817783400 cubed (81738817783400³) is 546116195682865415033376075262329704000000
• The square root of 81738817783400 is 9040952.2608738511
• The cube root of 81738817783400 is 43398.6397287563

Scales and comparisons

• 81,738,817,783,400 seconds is equal to 2,599,041 years, 29 weeks, 4 days, 18 hours, 3 minutes, 20 seconds.
• To count from 1 to 81,738,817,783,400 would take you about six million, four hundred ninety-seven thousand, six hundred three 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 81738817783400 cubic inches would be around 3616.6 feet tall.

Recreational maths with 81738817783400

• 81738817783400 backwards is 00438771883718
• The number of decimal digits it has is: 14
• The sum of 81738817783400's digits is 65
• More coming soon!