66721436340

Names of 66721436340

• Cardinal: 66721436340 can be written as Sixty-six billion, seven hundred twenty-one million, four hundred thirty-six thousand, three hundred forty.

Scientific notation

• Scientific notation: 6.672143634 × 10¹⁰

Factors of 66721436340

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 13720

Divisors of 66721436340

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 71 78 89 130 142 156 178 195 213 260 267 284 355 356 390 426 445 534 710 780 852 890 923 1065 1068 1157 1335 1420 1780 1846 2130 2314 2670 2769 3471 3692 4260 4615 4628 5340 5538 5785 6319 6942 9230 11076 11570 12638 13537 13845 13884 17355 18460 18957 23140 25276 27074 27690 31595 34710 37914 40611 54148 55380 63190 67685 69420 75828 81222 82147 94785 126380 135370 162444 164294 175981 189570 203055 246441 270740 328588 351962 379140 406110 410735 492882 527943 703924 812220 821470 879905 961127 985764 1055886 1204793 1232205 1642940 1759810 1922254 2111772 2409586 2464410 2639715 2883381 3519620 3614379 3844508 4805635 4819172 4928820 5279430 5766762 6023965 7228758 9611270 10558860 11533524 12047930 12494651 14416905 14457516 15662309 18071895 19222540 24095860 24989302 28833810 31324618 36143790 37483953 46986927 49978604 57667620 62473255 62649236 72287580 74967906 78311545 85540303 93973854 124946510 149935812 156623090 171080606 187419765 187947708 234934635 249893020 256620909 313246180 342161212 374839530 427701515 469869270 513241818 749679060 855403030 939738540 1026483636 1112023939 1283104545 1710806060 2224047878 2566209090 3336071817 4448095756 5132418180 5560119695 6672143634 11120239390 13344287268 16680359085 22240478780 33360718170 66721436340
• Sum of all divisors σ(n): 206332116480
• Sum of proper divisors (its aliquot sum) s(n): 139610680140
• 66721436340 is an abundant number, because the sum of its proper divisors (139610680140) is greater than itself. Its abundance is 72889243800

Bases of 66721436340

• Binary: 111110001000111010000101001010110100₂
• Hexadecimal: 0xF88E852B4
• Base-36: UNG7XRO

Squares and roots of 66721436340

• 66721436340 squared (66721436340²) is 4451750067272672595600
• 66721436340 cubed (66721436340³) is 297027158715124342008987964104000
• The square root of 66721436340 is 258304.9289889761
• The cube root of 66721436340 is 4055.9114271611

Scales and comparisons

• 66,721,436,340 seconds is equal to 2,121 years, 27 weeks, 5 days, 20 hours, 19 minutes.
• To count from 1 to 66,721,436,340 would take you about four thousand, two hundred forty-three 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 66721436340 cubic inches would be around 338 feet tall.

Recreational maths with 66721436340

• 66721436340 backwards is 04363412766
• The number of decimal digits it has is: 11
• The sum of 66721436340's digits is 42
• More coming soon!