21387223108812800

Names of 21387223108812800

• Cardinal: 21387223108812800 can be written as Twenty-one quadrillion, three hundred eighty-seven trillion, two hundred twenty-three billion, one hundred eight million, eight hundred twelve thousand, eight hundred.

Scientific notation

• Scientific notation: 2.13872231088128 × 10¹⁶

Factors of 21387223108812800

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 80796

Divisors of 21387223108812800

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 512 640 800 1024 1280 1600 2048 2560 3200 4096 5120 6400 8192 10240 12800 16384 20480 25600 32768 40960 51200 65536 80789 81920 102400 131072 161578 163840 204800 323156 327680 403945 409600 646312 655360 807890 819200 1292624 1615780 1638400 2019725 2585248 3231560 3276800 4039450 5170496 6463120 8078900 10340992 12926240 16157800 20681984 25852480 32315600 41363968 51704960 64631200 82727936 103409920 129262400 165455872 206819840 258524800 330911744 413639680 517049600 661823488 827279360 1034099200 1323646976 1654558720 2068198400 2647293952 3309117440 4136396800 5294587904 6526862521 6618234880 8272793600 10589175808 13053725042 13236469760 16545587200 26107450084 26472939520 32634312605 33091174400 52214900168 52945879040 65268625210 66182348800 104429800336 130537250420 132364697600 163171563025 208859600672 261074500840 264729395200 326343126050 417719201344 522149001680 652686252100 835438402688 1044298003360 1305372504200 1670876805376 2088596006720 2610745008400 3341753610752 4177192013440 5221490016800 6683507221504 8354384026880 10442980033600 13367014443008 16708768053760 20885960067200 26734028886016 33417536107520 41771920134400 53468057772032 66835072215040 83543840268800 106936115544064 133670144430080 167087680537600 213872231088128 267340288860160 334175361075200 427744462176256 534680577720320 668350722150400 855488924352512 1069361155440640 1336701444300800 2138722310881280 2673402888601600 4277444621762560 5346805777203200 10693611554406400 21387223108812800
• Sum of all divisors σ(n): 53040767511639663
• Sum of proper divisors (its aliquot sum) s(n): 31653544402826863
• 21387223108812800 is an abundant number, because the sum of its proper divisors (31653544402826863) is greater than itself. Its abundance is 10266321294014063

Bases of 21387223108812800

• Binary: 1001011111110111001000011101100001000100000000000000000₂
• Hexadecimal: 0x4BFB90EC220000
• Base-36: 5UL4YNP90JK

Squares and roots of 21387223108812800

• 21387223108812800 squared (21387223108812800²) is 457413312306136249549025443840000
• 21387223108812800 cubed (21387223108812800³) is 9782800563232403506793799095008252135473152000000
• The square root of 21387223108812800 is 146243711.3479167691
• The cube root of 21387223108812800 is 277577.8451467765

Scales and comparisons

• 21,387,223,108,812,800 seconds is equal to 680,047,539 years, 43 weeks, 3 days, 3 hours, 33 minutes, 20 seconds.
• To count from 1 to 21,387,223,108,812,800 would take you about two billion, forty million, one hundred forty-two thousand, six hundred nineteen 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 21387223108812800 cubic inches would be around 23131.5 feet tall.

Recreational maths with 21387223108812800

• 21387223108812800 backwards is 00821880132278312
• The number of decimal digits it has is: 17
• The sum of 21387223108812800's digits is 56
• More coming soon!