21491076748610880

Names of 21491076748610880

• Cardinal: 21491076748610880 can be written as Twenty-one quadrillion, four hundred ninety-one trillion, seventy-six billion, seven hundred forty-eight million, six hundred ten thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.149107674861088 × 10¹⁶

Factors of 21491076748610880

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2731709

Divisors of 21491076748610880

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 144 160 180 192 240 288 320 360 480 576 720 960 1440 2880 2731699 5463398 8195097 10926796 13658495 16390194 21853592 24585291 27316990 32780388 40975485 43707184 49170582 54633980 65560776 81950970 87414368 98341164 109267960 122926455 131121552 163901940 174828736 196682328 218535920 245852910 262243104 327803880 393364656 437071840 491705820 524486208 655607760 786729312 874143680 983411640 1311215520 1573458624 1966823280 2622431040 3933646560 7867293120 7462179426601 14924358853202 22386538279803 29848717706404 37310897133005 44773076559606 59697435412808 67159614839409 74621794266010 89546153119212 111932691399015 119394870825616 134319229678818 149243588532020 179092306238424 223865382798030 238789741651232 268638459357636 298487177064040 335798074197045 358184612476848 447730765596060 477579483302464 537276918715272 596974354128080 671596148394090 716369224953696 895461531192120 1074553837430544 1193948708256160 1343192296788180 1432738449907392 1790923062384240 2149107674861088 2387897416512320 2686384593576360 3581846124768480 4298215349722176 5372769187152720 7163692249536960 10745538374305440 21491076748610880
• Sum of all divisors σ(n): 73920376460129706
• Sum of proper divisors (its aliquot sum) s(n): 52429299711518826
• 21491076748610880 is an abundant number, because the sum of its proper divisors (52429299711518826) is greater than itself. Its abundance is 30938222962907946

Bases of 21491076748610880

• Binary: 1001100010110100000010100111011011100010000110101000000₂
• Hexadecimal: 0x4C5A053B710D40
• Base-36: 5VLY8D0YQ80

Squares and roots of 21491076748610880

• 21491076748610880 squared (21491076748610880²) is 461866379814683193432009654374400
• 21491076748610880 cubed (21491076748610880³) is 9926005816200419461454242671240930384115433472000
• The square root of 21491076748610880 is 146598351.7936367523
• The cube root of 21491076748610880 is 278026.4141206711

Scales and comparisons

• 21,491,076,748,610,880 seconds is equal to 683,349,764 years, 17 weeks, 5 days, 48 minutes.
• To count from 1 to 21,491,076,748,610,880 would take you about two billion, fifty million, forty-nine thousand, two hundred ninety-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 21491076748610880 cubic inches would be around 23168.9 feet tall.

Recreational maths with 21491076748610880

• 21491076748610880 backwards is 08801684767019412
• 21491076748610880 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21491076748610880's digits is 72
• More coming soon!