21621189838296843

Names of 21621189838296843

• Cardinal: 21621189838296843 can be written as Twenty-one quadrillion, six hundred twenty-one trillion, one hundred eighty-nine billion, eight hundred thirty-eight million, two hundred ninety-six thousand, eight hundred forty-three.

Scientific notation

• Scientific notation: 2.1621189838296843 × 10¹⁶

Factors of 21621189838296843

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 101

Divisors of 21621189838296843

• Number of divisors d(n): 140
• Complete list of divisors:
  1 3 9 27 31 67 81 93 201 279 603 837 961 1809 2077 2511 2883 4489 5427 6231 8649 13467 18693 25947 29791 40401 56079 64387 77841 89373 121203 139159 168237 193161 268119 300763 363609 417477 579483 804357 902289 923521 1252431 1738449 1995997 2413071 2706867 2770563 3757293 4313929 5215347 5987991 8120601 8311689 9323653 11271879 12941787 17963973 24361803 24935067 27970959 28629151 38825361 53891919 61875907 74805201 83912877 85887453 116476083 133731799 161675757 185627721 251738631 257662359 289033243 349428249 401195397 556883163 755215893 772987077 867099729 887503681 1203586191 1670649489 1918153117 2318961231 2601299187 2662511043 3610758573 4145685769 5011948467 5754459351 7803897561 7987533129 8960030533 10832275719 12437057307 17263378053 23411692683 23962599387 26880091599 37311171921 51790134159 59462746627 71887798161 80640274797 111933515763 128516258839 155370402477 178388239881 241920824391 277760946523 335800547289 385548776517 535164719643 725762473173 833282839569 1156646329551 1605494158929 2499848518707 3469938988653 3984004024009 4816482476787 7499545556121 8610589342213 10409816965959 11952012072027 22498636668363 25831768026639 35856036216081 77495304079917 107568108648243 232485912239751 266928269608603 322704325944729 697457736719253 800784808825809 2402354426477427 7207063279432281 21621189838296843
• Sum of all divisors σ(n): 33880610404929640
• Sum of proper divisors (its aliquot sum) s(n): 12259420566632797
• 21621189838296843 is a deficient number, because the sum of its proper divisors (12259420566632797) is less than itself. Its deficiency is 9361769271664046

Bases of 21621189838296843

• Binary: 1001100110100000101101110001011111011101101011100001011₂
• Hexadecimal: 0x4CD05B8BEED70B
• Base-36: 5WW2LHN55OR

Squares and roots of 21621189838296843

• 21621189838296843 squared (21621189838296843²) is 467475850023670663954250983766649
• 21621189838296843 cubed (21621189838296843³) is 10107384098180967152694940738017146046887105389107
• The square root of 21621189838296843 is 147041456.1893918505
• The cube root of 21621189838296843 is 278586.3692501493

Scales and comparisons

• 21,621,189,838,296,843 seconds is equal to 687,486,958 years, 6 weeks, 4 days, 1 hour, 34 minutes, 3 seconds.
• To count from 1 to 21,621,189,838,296,843 would take you about two billion, sixty-two million, four hundred sixty thousand, eight hundred seventy-four 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 21621189838296843 cubic inches would be around 23215.5 feet tall.

Recreational maths with 21621189838296843

• 21621189838296843 backwards is 34869283898112612
• 21621189838296843 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21621189838296843's digits is 81
• More coming soon!