640512425555781168

Names of 640512425555781168

• Cardinal: 640512425555781168 can be written as Six hundred forty quadrillion, five hundred twelve trillion, four hundred twenty-five billion, five hundred fifty-five million, seven hundred eighty-one thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 6.40512425555781168 × 10¹⁷

Factors of 640512425555781168

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 189126

Divisors of 640512425555781168

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 39 47 48 52 78 94 104 141 156 169 188 208 282 312 338 376 507 564 611 624 676 752 1014 1128 1222 1352 1833 2028 2209 2256 2444 2704 3666 4056 4418 4888 6627 7332 7943 8112 8836 9776 13254 14664 15886 17672 23829 26508 28717 29328 31772 35344 47658 53016 57434 63544 86151 95316 106032 114868 127088 172302 189061 190632 229736 344604 373321 378122 381264 459472 567183 689208 746642 756244 1119963 1134366 1378416 1493284 1512488 2239926 2268732 2457793 2986568 3024976 4479852 4537464 4915586 5973136 7373379 8885867 8959704 9074928 9831172 14746758 17771734 17919408 19662344 26657601 29493516 31951309 35543468 39324688 53315202 58987032 63902618 71086936 95853927 106630404 115516271 117974064 127805236 142173872 191707854 213260808 231032542 255610472 346548813 383415708 417635749 426521616 462065084 511220944 693097626 766831416 835271498 924130168 1252907247 1386195252 1501711523 1533662832 1670542996 1848260336 2505814494 2772390504 3003423046 3341085992 4505134569 5011628988 5429264737 5544781008 6006846092 6682171984 9010269138 10023257976 10858529474 12013692184 16287794211 18020538276 20046515952 21717058948 24027384368 32575588422 35744061721 36041076552 43434117896 65151176844 70580441581 71488123442 72082153104 86868235792 107232185163 130302353688 141160883162 142976246884 211741324743 214464370326 260604707376 282321766324 285952493768 423482649486 428928740652 464672802373 564643532648 571904987536 846965298972 857857481304 929345604746 1129287065296 1394018407119 1679970900887 1693930597944 1715714962608 1858691209492 2788036814238 3359941801774 3387861195888 3717382418984 5039912702661 5576073628476 6040746430849 6719883603548 7434764837968 10079825405322 11152147256952 12081492861698 13439767207096 18122239292547 20159650810644 21839621711531 22304294513904 24162985723396 26879534414192 36244478585094 40319301621288 43679243423062 48325971446792 65518865134593 72488957170188 78958632341689 80638603242576 87358486846124 96651942893584 131037730269186 144977914340376 157917264683378 174716973692248 236875897025067 262075460538372 283915082249903 289955828680752 315834529366756 349433947384496 473751794050134 524150921076744 567830164499806 631669058733512 851745246749709 947503588100268 1026462220441957 1048301842153488 1135660328999612 1263338117467024 1703490493499418 1895007176200536 2052924440883914 2271320657999224 3079386661325871 3406980986998836 3790014352401072 4105848881767828 4542641315998448 6158773322651742 6813961973997672 8211697763535656 12317546645303484 13344008865745441 13627923947995344 16423395527071312 24635093290606968 26688017731490882 40032026597236323 49270186581213936 53376035462981764 80064053194472646 106752070925963528 160128106388945292 213504141851927056 320256212777890584 640512425555781168
• Sum of all divisors σ(n): 1830671971999005852
• Sum of proper divisors (its aliquot sum) s(n): 1190159546443224684
• 640512425555781168 is an abundant number, because the sum of its proper divisors (1190159546443224684) is greater than itself. Its abundance is 549647120887443516

Bases of 640512425555781168

• Binary: 100011100011100011101010100001001111011110011110011000110000₂
• Hexadecimal: 0x8E38EA84F79E630
• Base-36: 4V6QPE635OHC

Squares and roots of 640512425555781168

• 640512425555781168 squared (640512425555781168²) is 410256167291350112678917506703444224
• 640512425555781168 cubed (640512425555781168³) is 262774172811000994032386660515197196617771260437573632
• The square root of 640512425555781168 is 800320201.8915811225
• The cube root of 640512425555781168 is 862003.8120300649

Scales and comparisons

• 640,512,425,555,781,168 seconds is equal to 20,366,313,897 years, 34 weeks, 1 day, 11 hours, 12 minutes, 48 seconds.
• To count from 1 to 640,512,425,555,781,168 would take you about sixty-one billion, ninety-eight million, nine hundred forty-one thousand, six hundred ninety-two 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 640512425555781168 cubic inches would be around 71833.7 feet tall.

Recreational maths with 640512425555781168

• 640512425555781168 backwards is 861187555524215046
• The number of decimal digits it has is: 18
• The sum of 640512425555781168's digits is 75
• More coming soon!