21561617363013

Names of 21561617363013

• Cardinal: 21561617363013 can be written as Twenty-one trillion, five hundred sixty-one billion, six hundred seventeen million, three hundred sixty-three thousand and thirteen.

Scientific notation

• Scientific notation: 2.1561617363013 × 10¹³

Factors of 21561617363013

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 43805551

Divisors of 21561617363013

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 7 9 13 21 39 63 91 117 273 601 819 1803 4207 5409 7813 12621 23439 37863 54691 70317 164073 492219 43804927 131414781 306634489 394244343 569464051 919903467 1708392153 2759710401 3986248357 5125176459 11958745071 26326761127 35876235213 78980283381 184287327889 236940850143 342247894651 552861983667 1026743683953 1658585951001 2395735262557 3080231051859 7187205787671 21561617363013
• Sum of all divisors σ(n): 38395545051136
• Sum of proper divisors (its aliquot sum) s(n): 16833927688123
• 21561617363013 is a deficient number, because the sum of its proper divisors (16833927688123) is less than itself. Its deficiency is 4727689674890

Bases of 21561617363013

• Binary: 100111001110000110100100010110011000001000101₂
• Hexadecimal: 0x139C348B3045
• Base-36: 7N59Q9UF9

Squares and roots of 21561617363013

• 21561617363013 squared (21561617363013²) is 464903343308983675820438169
• 21561617363013 cubed (21561617363013³) is 10024067999213776041916539682763994043197
• The square root of 21561617363013 is 4643448.8651230995
• The cube root of 21561617363013 is 27833.0272563079

Scales and comparisons

• 21,561,617,363,013 seconds is equal to 685,592 years, 38 weeks, 2 days, 12 hours, 23 minutes, 33 seconds.
• To count from 1 to 21,561,617,363,013 would take you about one million, seven hundred thirteen thousand, nine hundred eighty-one 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 21561617363013 cubic inches would be around 2319.4 feet tall.

Recreational maths with 21561617363013

• 21561617363013 backwards is 31036371616512
• The number of decimal digits it has is: 14
• The sum of 21561617363013's digits is 45
• More coming soon!