640399221648

Names of 640399221648

• Cardinal: 640399221648 can be written as Six hundred forty billion, three hundred ninety-nine million, two hundred twenty-one thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 6.40399221648 × 10¹¹

Factors of 640399221648

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1819

Divisors of 640399221648

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 31 36 38 48 57 62 72 76 93 114 124 144 151 152 171 186 228 248 279 302 304 342 372 453 456 496 558 589 604 684 744 906 912 961 1116 1178 1208 1359 1368 1488 1613 1767 1812 1922 2232 2356 2416 2718 2736 2869 2883 3226 3534 3624 3844 4464 4681 4712 4839 5301 5436 5738 5766 6452 7068 7248 7688 8607 8649 9362 9424 9678 10602 10872 11476 11532 12904 14043 14136 14517 15376 17214 17298 18259 18724 19356 21204 21744 22952 23064 25808 25821 28086 28272 29034 30647 34428 34596 36518 37448 38712 42129 42408 45904 46128 50003 51642 54777 56172 58068 61294 68856 69192 73036 74896 77424 84258 84816 88939 91941 100006 103284 109554 112344 116136 122588 137712 138384 145111 146072 150009 164331 168516 177878 183882 200012 206568 219108 224688 232272 243563 245176 266817 275823 290222 292144 300018 328662 337032 355756 367764 400024 413136 435333 438216 450027 487126 490352 533634 551646 580444 600036 657324 674064 711512 730689 735528 800048 800451 870666 876432 900054 950057 974252 1067268 1103292 1160888 1200072 1305999 1314648 1423024 1461378 1471056 1550093 1600902 1741332 1800108 1900114 1948504 2134536 2192067 2206584 2321776 2400144 2611998 2629296 2757109 2850171 2922756 3100186 3201804 3482664 3600216 3800228 3897008 4269072 4384134 4413168 4627697 4650279 5223996 5514218 5700342 5845512 6200372 6403608 6965328 7200432 7550453 7600456 8271327 8550513 8768268 9255394 9300558 10447992 11028436 11400684 11691024 12400744 12807216 13883091 13950837 15100906 15200912 16542654 17101026 17536536 18510788 18601116 20895984 22056872 22651359 22801368 24801488 24813981 27766182 27901674 29451767 30201812 33085308 34202052 35073072 37021576 37202232 41649273 44113744 45302718 45602736 49627962 55532364 55803348 58903534 60403624 66170616 67954077 68404104 74043152 74404464 83298546 88355301 90605436 99255924 111064728 111606696 117807068 120807248 132341232 135908154 136808208 143458607 166597092 176710602 181210872 198511848 222129456 223213392 234064043 235614136 265065903 271816308 286917214 333194184 353421204 362421744 397023696 430375821 468128086 471228272 530131806 543632616 573834428 666388368 702192129 706842408 860751642 936256172 1060263612 1087265232 1147668856 1291127463 1404384258 1413684816 1721503284 1872512344 2106576387 2120527224 2295337712 2582254926 2808768516 3443006568 3745024688 4213152774 4241054448 4447216817 5164509852 5617537032 6886013136 8426305548 8894433634 10329019704 11235074064 13341650451 16852611096 17788867268 20658039408 26683300902 33705222192 35577734536 40024951353 53366601804 71155469072 80049902706 106733203608 160099805412 213466407216 320199610824 640399221648
• Sum of all divisors σ(n): 1963502274240
• Sum of proper divisors (its aliquot sum) s(n): 1323103052592
• 640399221648 is an abundant number, because the sum of its proper divisors (1323103052592) is greater than itself. Its abundance is 682703830944

Bases of 640399221648

• Binary: 1001010100011010110001001010001110010000₂
• Hexadecimal: 0x951AC4A390
• Base-36: 86715TW0

Squares and roots of 640399221648

• 640399221648 squared (640399221648²) is 410111163087364231835904
• 640399221648 cubed (640399221648³) is 262634869630304042691588343660449792
• The square root of 640399221648 is 800249.4746315051
• The cube root of 640399221648 is 8619.5302563593

Scales and comparisons

• 640,399,221,648 seconds is equal to 20,362 years, 37 weeks, 1 day, 40 minutes, 48 seconds.
• To count from 1 to 640,399,221,648 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 640399221648 cubic inches would be around 718.3 feet tall.

Recreational maths with 640399221648

• 640399221648 backwards is 846122993046
• The number of decimal digits it has is: 12
• The sum of 640399221648's digits is 54
• More coming soon!