81622672768

Names of 81622672768

• Cardinal: 81622672768 can be written as Eighty-one billion, six hundred twenty-two million, six hundred seventy-two thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 8.1622672768 × 10¹⁰

Factors of 81622672768

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1828

Divisors of 81622672768

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 83 91 98 104 112 128 166 182 196 208 224 332 343 364 392 416 448 581 637 664 686 728 784 832 896 1079 1162 1274 1328 1372 1456 1568 1664 1723 2158 2324 2548 2656 2744 2912 3136 3446 4067 4316 4459 4648 5096 5312 5488 5824 6272 6892 7553 8134 8632 8918 9296 10192 10624 10976 11648 12061 13784 15106 16268 17264 17836 18592 20384 21952 22399 24122 27568 28469 30212 32536 34528 35672 37184 40768 43904 44798 48244 52871 55136 56938 60424 65072 69056 71344 74368 81536 84427 89596 96488 105742 110272 113876 120848 130144 138112 142688 143009 156793 168854 179192 192976 211484 220544 227752 241696 260288 285376 286018 313586 337708 358384 370097 385952 422968 455504 483392 520576 570752 572036 590989 627172 675416 716768 740194 771904 845936 911008 966784 1001063 1097551 1144072 1181978 1254344 1350832 1433536 1480388 1543808 1691872 1822016 1859117 2002126 2195102 2288144 2363956 2508688 2701664 2867072 2960776 3383744 3644032 3718234 4004252 4390204 4576288 4727912 5017376 5403328 5921552 6767488 7007441 7436468 7682857 8008504 8780408 9152576 9455824 10034752 10806656 11843104 13013819 14014882 14872936 15365714 16017008 17560816 18305152 18911648 20069504 23686208 26027638 28029764 29745872 30731428 32034016 35121632 37823296 47372416 49052087 52055276 56059528 59491744 61462856 64068032 70243264 75646592 91096733 98104174 104110552 112119056 118983488 122925712 128136064 140486528 182193466 196208348 208221104 224238112 237966976 245851424 364386932 392416696 416442208 448476224 491702848 637677131 728773864 784833392 832884416 896952448 983405696 1275354262 1457547728 1569666784 1665768832 2550708524 2915095456 3139333568 5101417048 5830190912 6278667136 10202834096 11660381824 20405668192 40811336384 81622672768
• Sum of all divisors σ(n): 206797248000
• Sum of proper divisors (its aliquot sum) s(n): 125174575232
• 81622672768 is an abundant number, because the sum of its proper divisors (125174575232) is greater than itself. Its abundance is 43551902464

Bases of 81622672768

• Binary: 1001100000001000101110010010110000000₂
• Hexadecimal: 0x1301172580
• Base-36: 11HW15DS

Squares and roots of 81622672768

• 81622672768 squared (81622672768²) is 6662260709792008781824
• 81622672768 cubed (81622672768³) is 543791525810456546140202658168832
• The square root of 81622672768 is 285696.8196672829
• The cube root of 81622672768 is 4337.8074530497

Scales and comparisons

• 81,622,672,768 seconds is equal to 2,595 years, 18 weeks, 20 hours, 39 minutes, 28 seconds.
• To count from 1 to 81,622,672,768 would take you about five thousand, one hundred ninety 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 81622672768 cubic inches would be around 361.5 feet tall.

Recreational maths with 81622672768

• 81622672768 backwards is 86727622618
• The number of decimal digits it has is: 11
• The sum of 81622672768's digits is 55
• More coming soon!