81320388290764

Names of 81320388290764

• Cardinal: 81320388290764 can be written as Eighty-one trillion, three hundred twenty billion, three hundred eighty-eight million, two hundred ninety thousand, seven hundred sixty-four.

Scientific notation

• Scientific notation: 8.1320388290764 × 10¹³

Factors of 81320388290764

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2902

Divisors of 81320388290764

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 7 14 19 28 38 49 76 98 133 196 266 343 532 607 686 931 1214 1372 1862 2267 2428 3724 4249 4534 6517 8498 9068 11533 13034 15869 16996 23066 26068 29743 31738 43073 46132 59486 63476 80731 86146 111083 118972 161462 172292 208201 222166 301511 322924 416402 444332 565117 603022 777581 832804 1130234 1206044 1376069 1555162 2110577 2260468 2752138 3110324 3955819 4221154 5139289 5504276 7911638 8442308 9632483 10278578 14774039 15823276 19264966 20557156 26145311 29548078 35975023 38529932 52290622 59096156 67427381 71950046 97646491 104581244 134854762 143900092 183017177 195292982 251825161 269709524 366034354 390585964 471991667 503650322 683525437 732068708 943983334 1007300644 1281120239 1367050874 1762776127 1887966668 2562240478 2734101748 3119548423 3525552254 4784678059 5124480956 6239096846 7051104508 8967841673 9569356118 12478193692 17935683346 19138712236 21836838961 33492746413 35871366692 43673677922 59271420037 66985492826 87347355844 118542840074 133970985652 152857872727 237085680148 305715745454 414899940259 611431490908 829799880518 1070005109089 1659599761036 2140010218178 2904299581813 4280020436356 5808599163626 11617198327252 20330097072691 40660194145382 81320388290764
• Sum of all divisors σ(n): 175059732736000
• Sum of proper divisors (its aliquot sum) s(n): 93739344445236
• 81320388290764 is an abundant number, because the sum of its proper divisors (93739344445236) is greater than itself. Its abundance is 12418956154472

Bases of 81320388290764

• Binary: 10010011111010111100000110110110110100011001100₂
• Hexadecimal: 0x49F5E0DB68CC
• Base-36: STQ2JK3BG

Squares and roots of 81320388290764

• 81320388290764 squared (81320388290764²) is 6613005551760626677407703696
• 81320388290764 cubed (81320388290764³) is 537772179238152190782072153977527605463744
• The square root of 81320388290764 is 9017781.7832748647
• The cube root of 81320388290764 is 43324.4589575347

Scales and comparisons

• 81,320,388,290,764 seconds is equal to 2,585,736 years, 41 weeks, 6 days, 19 hours, 26 minutes, 4 seconds.
• To count from 1 to 81,320,388,290,764 would take you about six million, four hundred sixty-four thousand, three hundred forty-two 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 81320388290764 cubic inches would be around 3610.4 feet tall.

Recreational maths with 81320388290764

• 81320388290764 backwards is 46709288302318
• The number of decimal digits it has is: 14
• The sum of 81320388290764's digits is 61
• More coming soon!