640646851439664

Names of 640646851439664

• Cardinal: 640646851439664 can be written as Six hundred forty trillion, six hundred forty-six billion, eight hundred fifty-one million, four hundred thirty-nine thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 6.40646851439664 × 10¹⁴

Factors of 640646851439664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2774

Divisors of 640646851439664

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 243 324 367 432 486 648 733 734 972 1101 1296 1466 1468 1669 1944 2199 2202 2932 2936 3303 3338 3888 4398 4404 5007 5864 5872 6597 6606 6676 8796 8808 9909 10014 11728 13194 13212 13352 15021 17592 17616 19791 19818 20028 26388 26424 26704 29727 30042 35184 39582 39636 40056 45063 52776 52848 59373 59454 60084 79164 79272 80112 89181 90126 105552 118746 118908 120168 134689 135189 158328 158544 178119 178362 180252 237492 237816 240336 269011 269378 270378 316656 356238 356724 360504 404067 405567 474984 475632 538022 538756 540756 612523 712476 713448 721008 807033 808134 811134 949968 1076044 1077512 1081512 1212201 1223377 1225046 1424952 1426896 1614066 1616268 1622268 1837569 2152088 2155024 2163024 2421099 2424402 2446754 2450092 2849904 3228132 3232536 3244536 3636603 3670131 3675138 4304176 4842198 4848804 4893508 4900184 5512707 6456264 6465072 6489072 7263297 7273206 7340262 7350276 9684396 9697608 9787016 9800368 10909809 11010393 11025414 12912528 14526594 14546412 14680524 14700552 16538121 19368792 19395216 19574032 21789891 21819618 22020786 22050828 29053188 29092824 29361048 29401104 32729427 33031179 33076242 38737584 43579782 43639236 44041572 44101656 49614363 58106376 58185648 58722096 65369673 65458854 66062358 66152484 87159564 87278472 88083144 88203312 98727037 99093537 99228726 116212752 130739346 130917708 132124716 132304968 148843089 174319128 174556944 176166288 197454074 198187074 198457452 224795941 261478692 261835416 264249432 264609936 296181111 297280611 297686178 348638256 394908148 396374148 396914904 448979359 449591882 522957384 523670832 528498864 592362222 594561222 595372356 674387823 789816296 792748296 793829808 888543333 897958718 899183764 1045914768 1184724444 1189122444 1190744712 1346938077 1348775646 1579632592 1585496592 1777086666 1795917436 1798367528 2023163469 2369448888 2378244888 2381489424 2665629999 2693876154 2697551292 3554173332 3591834872 3596735056 4040814231 4046326938 4738897776 4756489776 5331259998 5387752308 5395102584 6069490407 7108346664 7183669744 7996889997 8081628462 8092653876 10662519996 10775504616 10790205168 12122442693 12138980814 14216693328 15993779994 16163256924 16185307752 18208471221 21325039992 21551009232 23990669991 24244885386 24277961628 31987559988 32326513848 32370615504 36367328079 36416942442 42650079984 47981339982 48489770772 48555923256 54625413663 63975119976 64653027696 72734656158 72833884884 95962679964 96979541544 97111846512 109101984237 109250827326 127950239952 145469312316 145667769768 164775424753 191925359928 193959083088 218203968474 218501654652 290938624632 291335539536 329550849506 383850719856 436407936948 437003309304 494326274259 581877249264 659101699012 872815873896 874006618608 988652548518 1318203398024 1482978822777 1745631747792 1977305097036 2636406796048 2965957645554 3954610194072 4448936468331 5931915291108 7909220388144 8897872936662 11863830582216 13346809404993 17795745873324 23727661164432 26693618809986 35591491746648 40040428214979 53387237619972 71182983493296 80080856429958 106774475239944 160161712859916 213548950479888 320323425719832 640646851439664
• Sum of all divisors σ(n): 1868068112186640
• Sum of proper divisors (its aliquot sum) s(n): 1227421260746976
• 640646851439664 is an abundant number, because the sum of its proper divisors (1227421260746976) is greater than itself. Its abundance is 586774409307312

Bases of 640646851439664

• Binary: 10010001101010101000111000000000011010110000110000₂
• Hexadecimal: 0x246AA3801AC30
• Base-36: 6B393MC300

Squares and roots of 640646851439664

• 640646851439664 squared (640646851439664²) is 410428388259554915389432432896
• 640646851439664 cubed (640646851439664³) is 262939654679939814101560279131870631672786944
• The square root of 640646851439664 is 25311002.5767385201
• The cube root of 640646851439664 is 86206.4111416569

Scales and comparisons

• 640,646,851,439,664 seconds is equal to 20,370,588 years, 11 weeks, 4 days, 21 hours, 14 minutes, 24 seconds.
• To count from 1 to 640,646,851,439,664 would take you about fifty million, nine hundred twenty-six thousand, four hundred seventy 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 640646851439664 cubic inches would be around 7183.9 feet tall.

Recreational maths with 640646851439664

• 640646851439664 backwards is 466934158646046
• 640646851439664 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 640646851439664's digits is 72
• More coming soon!