640429614981

Names of 640429614981

• Cardinal: 640429614981 can be written as Six hundred forty billion, four hundred twenty-nine million, six hundred fourteen thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 6.40429614981 × 10¹¹

Factors of 640429614981

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 303

Divisors of 640429614981

• Number of divisors d(n): 180
• Complete list of divisors:
  1 3 9 13 17 37 39 51 111 117 153 169 221 233 289 333 481 507 629 663 699 867 1443 1521 1887 1989 2097 2197 2601 2873 3029 3757 3961 4329 5661 6253 6591 8177 8619 8621 9087 10693 11271 11883 18759 19773 24531 25857 25863 27261 28561 32079 33813 35649 37349 39377 48841 51493 56277 67337 73593 77589 81289 85683 96237 106301 112047 112073 118131 139009 146523 146557 154479 202011 243867 257049 318903 336141 336219 354393 417027 439569 439671 463437 485537 511901 606033 634933 669409 731601 875381 956709 1008657 1056757 1251081 1319013 1381913 1456611 1456949 1535703 1807117 1904799 1905241 2008227 2491469 2626143 3170271 4145739 4369833 4370847 4607109 5421351 5714397 5715723 6024681 6654713 7474407 7878429 8254129 8702317 9510813 11379953 12437217 13112541 16264053 17147169 17964869 18940337 19964139 22423221 23492521 24762387 24768133 26106951 32389097 34139859 53894607 56821011 59892417 70477563 74287161 74304399 78320853 97167291 102419577 113130121 147939389 161683821 170463033 211432689 222913197 246224381 291501873 305402773 321985729 339390363 421058261 443818167 738673143 916208319 965957187 1018171089 1263174783 1331454501 1923212057 2216019429 2748624957 2897871561 3789524349 4185814477 5473757393 5769636171 12557443431 16421272179 17308908513 37672330293 49263816537 71158846109 213476538327 640429614981
• Sum of all divisors σ(n): 1098033341652
• Sum of proper divisors (its aliquot sum) s(n): 457603726671
• 640429614981 is a deficient number, because the sum of its proper divisors (457603726671) is less than itself. Its deficiency is 182825888310

Bases of 640429614981

• Binary: 1001010100011100100101000110011110000101₂
• Hexadecimal: 0x951C946785
• Base-36: 867J99J9

Squares and roots of 640429614981

• 640429614981 squared (640429614981²) is 410150091744711899630361
• 640429614981 cubed (640429614981³) is 262672265340487668423041211448038141
• The square root of 640429614981 is 800268.4643174439
• The cube root of 640429614981 is 8619.6666151077

Scales and comparisons

• 640,429,614,981 seconds is equal to 20,363 years, 35 weeks, 2 days, 19 hours, 16 minutes, 21 seconds.
• To count from 1 to 640,429,614,981 would take you about forty thousand, seven hundred twenty-seven 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 640429614981 cubic inches would be around 718.3 feet tall.

Recreational maths with 640429614981

• 640429614981 backwards is 189416924046
• The number of decimal digits it has is: 12
• The sum of 640429614981's digits is 54
• More coming soon!