21180821928864

Names of 21180821928864

• Cardinal: 21180821928864 can be written as Twenty-one trillion, one hundred eighty billion, eight hundred twenty-one million, nine hundred twenty-eight thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.1180821928864 × 10¹³

Factors of 21180821928864

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 314422

Divisors of 21180821928864

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 208 312 416 624 1248 69221 138442 207663 245183 276884 415326 490366 553768 735549 830652 899873 980732 1107536 1471098 1661304 1799746 1961464 2215072 2699619 2942196 3187379 3322608 3599492 3922928 5399238 5884392 6374758 6645216 7198984 7845856 9562137 10798476 11768784 12749516 14397968 19124274 21596952 23537568 25499032 28795936 38248548 43193904 50998064 76497096 86387808 101996128 152994192 305988384 16971812443 33943624886 50915437329 67887249772 101830874658 135774499544 203661749316 220633561759 271548999088 407323498632 441267123518 543097998176 661900685277 814646997264 882534247036 1323801370554 1629293994528 1765068494072 2647602741108 3530136988144 5295205482216 7060273976288 10590410964432 21180821928864
• Sum of all divisors σ(n): 59877663519744
• Sum of proper divisors (its aliquot sum) s(n): 38696841590880
• 21180821928864 is an abundant number, because the sum of its proper divisors (38696841590880) is greater than itself. Its abundance is 17516019662016

Bases of 21180821928864

• Binary: 100110100001110001011010111011111101110100000₂
• Hexadecimal: 0x13438B5DFBA0
• Base-36: 7IAC2I4YO

Squares and roots of 21180821928864

• 21180821928864 squared (21180821928864²) is 448627217582246097476330496
• 21180821928864 cubed (21180821928864³) is 9502293208051279200910147058871465836544
• The square root of 21180821928864 is 4602262.6966378179
• The cube root of 21180821928864 is 27668.2019128277

Scales and comparisons

• 21,180,821,928,864 seconds is equal to 673,484 years, 32 weeks, 1 day, 22 hours, 54 minutes, 24 seconds.
• To count from 1 to 21,180,821,928,864 would take you about one million, six hundred eighty-three thousand, seven hundred eleven 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 21180821928864 cubic inches would be around 2305.7 feet tall.

Recreational maths with 21180821928864

• 21180821928864 backwards is 46882912808112
• The number of decimal digits it has is: 14
• The sum of 21180821928864's digits is 60
• More coming soon!