155985383837621

Names of 155985383837621

• Cardinal: 155985383837621 can be written as One hundred fifty-five trillion, nine hundred eighty-five billion, three hundred eighty-three million, eight hundred thirty-seven thousand, six hundred twenty-one.

Scientific notation

• Scientific notation: 1.55985383837621 × 10¹⁴

Factors of 155985383837621

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 404

Divisors of 155985383837621

• Number of divisors d(n): 72
• Complete list of divisors:
  1 13 61 103 169 227 793 1339 2951 3721 6283 10309 10609 13847 17407 23381 38363 48373 81679 137917 180011 303953 383263 628849 647149 844667 1061827 1092727 1426241 1792921 2340143 2408243 3951389 4982419 8412937 10980671 14205451 18541133 31307159 39476089 64771447 66656347 87000701 109368181 142748723 146902823 184670863 241034729 248049029 406993067 513189157 866532511 1131009113 1909736699 3224637377 4066037167 6671459041 8961072203 11264922643 14703118469 15130990769 24826577087 41920285901 52858483171 116493938639 196702879997 687160281223 922990436909 1514421202307 2557137439961 11998875679817 155985383837621
• Sum of all divisors σ(n): 174169057308480
• Sum of proper divisors (its aliquot sum) s(n): 18183673470859
• 155985383837621 is a deficient number, because the sum of its proper divisors (18183673470859) is less than itself. Its deficiency is 137801710366762

Bases of 155985383837621

• Binary: 100011011101111000101101011001001100111110110101₂
• Hexadecimal: 0x8DDE2D64CFB5
• Base-36: 1JAIP243AT

Squares and roots of 155985383837621

• 155985383837621 squared (155985383837621²) is 24331439970969954689294939641
• 155985383837621 cubed (155985383837621³) is 3795349003193782343626141576665184140034061
• The square root of 155985383837621 is 12489410.8683164475
• The cube root of 155985383837621 is 53830.4448309773

Scales and comparisons

• 155,985,383,837,621 seconds is equal to 4,959,852 years, 37 weeks, 13 minutes, 41 seconds.
• To count from 1 to 155,985,383,837,621 would take you about twelve million, three hundred ninety-nine thousand, six hundred thirty-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 155985383837621 cubic inches would be around 4485.9 feet tall.

Recreational maths with 155985383837621

• 155985383837621 backwards is 126738383589551
• The number of decimal digits it has is: 15
• The sum of 155985383837621's digits is 74
• More coming soon!