640401040461

Names of 640401040461

• Cardinal: 640401040461 can be written as Six hundred forty billion, four hundred one million, forty thousand, four hundred sixty-one.

Scientific notation

• Scientific notation: 6.40401040461 × 10¹¹

Factors of 640401040461

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 143

Divisors of 640401040461

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 7 13 19 21 39 49 57 91 101 133 147 169 247 273 303 343 361 399 507 637 707 741 931 1029 1083 1183 1313 1729 1911 1919 2121 2527 2793 3211 3549 3939 4459 4693 4949 5187 5757 6517 7581 8281 9191 9633 10201 12103 13377 13433 14079 14847 17069 17689 19551 22477 24843 24947 27573 30603 32851 34643 36309 36461 40299 51207 53067 57967 61009 64337 67431 71407 74841 84721 94031 98553 103929 109383 119483 123823 132613 157339 173901 174629 183027 193011 193819 214221 229957 254163 255227 282093 324311 358449 371469 397839 427063 450359 472017 473993 499849 523887 581457 658217 689871 765681 836381 928291 972933 1101373 1222403 1281189 1351077 1356733 1421979 1499547 1609699 1723969 1786589 1974651 2270177 2509143 2519647 2784873 2989441 3304119 3317951 3498943 3667209 3682561 4070199 4829097 5171907 5359767 5854667 6161909 6498037 6810531 7558941 8556821 8968323 9497131 9953853 10496829 11047683 12067783 12506123 15891239 17564001 17637529 18485727 19494111 20926087 23225657 25670463 25777927 28491393 32755411 36203349 37518369 43133363 45486259 47673717 47873293 52912587 62778261 66479917 69676971 77333781 84474481 98266233 111238673 123462703 129400089 136458777 143619879 162579599 180445489 199439751 229287877 253423443 301933541 333716019 335113051 370388109 487738797 541336467 591321367 622352809 687863631 864238921 905800623 1005339153 1263118423 1605015139 1773964101 1867058427 2113534787 2345791357 2592716763 3789355269 4356469663 4815045417 6340604361 7037374071 11235105973 13069408989 16420539499 30495287641 33705317919 49261618497 91485862923 213467013487 640401040461
• Sum of all divisors σ(n): 1149369710400
• Sum of proper divisors (its aliquot sum) s(n): 508968669939
• 640401040461 is a deficient number, because the sum of its proper divisors (508968669939) is less than itself. Its deficiency is 131432370522

Bases of 640401040461

• Binary: 1001010100011010111000000110010001001101₂
• Hexadecimal: 0x951AE0644D
• Base-36: 86728TAL

Squares and roots of 640401040461

• 640401040461 squared (640401040461²) is 410113492623531359092521
• 640401040461 cubed (640401040461³) is 262637107383204130934911861163492181
• The square root of 640401040461 is 800250.6110344433
• The cube root of 640401040461 is 8619.5384165287

Scales and comparisons

• 640,401,040,461 seconds is equal to 20,362 years, 40 weeks, 1 day, 1 hour, 54 minutes, 21 seconds.
• To count from 1 to 640,401,040,461 would take you about forty thousand, seven hundred twenty-five 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 640401040461 cubic inches would be around 718.3 feet tall.

Recreational maths with 640401040461

• 640401040461 backwards is 164040104046
• The number of decimal digits it has is: 12
• The sum of 640401040461's digits is 30
• More coming soon!