64689649920

Names of 64689649920

• Cardinal: 64689649920 can be written as Sixty-four billion, six hundred eighty-nine million, six hundred forty-nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 6.468964992 × 10¹⁰

Factors of 64689649920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 267418

Divisors of 64689649920

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 45 48 54 56 60 63 64 70 72 80 84 90 96 105 108 112 120 126 128 135 140 144 160 168 180 189 192 210 216 224 240 252 256 270 280 288 315 320 336 360 378 384 420 432 448 480 504 540 560 576 630 640 672 720 756 768 840 864 896 945 960 1008 1080 1120 1152 1260 1280 1344 1440 1512 1680 1728 1792 1890 1920 2016 2160 2240 2304 2520 2688 2880 3024 3360 3456 3780 3840 4032 4320 4480 5040 5376 5760 6048 6720 6912 7560 8064 8640 8960 10080 11520 12096 13440 15120 16128 17280 20160 24192 26880 30240 34560 40320 48384 60480 80640 120960 241920 267401 534802 802203 1069604 1337005 1604406 1871807 2139208 2406609 2674010 3208812 3743614 4011015 4278416 4813218 5348020 5615421 6417624 7219827 7487228 8022030 8556832 9359035 9626436 10696040 11230842 12033045 12835248 14439654 14974456 16044060 16846263 17113664 18718070 19252872 21392080 22461684 24066090 25670496 28077105 28879308 29948912 32088120 33692526 34227328 36099135 37436140 38505744 42784160 44923368 48132180 50538789 51340992 56154210 57758616 59897824 64176240 67385052 68454656 72198270 74872280 77011488 84231315 85568320 89846736 96264360 101077578 102681984 112308420 115517232 119795648 128352480 134770104 144396540 149744560 154022976 168462630 171136640 179693472 192528720 202155156 205363968 224616840 231034464 239591296 252693945 256704960 269540208 288793080 299489120 308045952 336925260 342273280 359386944 385057440 404310312 449233680 462068928 479182592 505387890 513409920 539080416 577586160 598978240 616091904 673850520 718773888 770114880 808620624 898467360 924137856 1010775780 1026819840 1078160832 1155172320 1197956480 1347701040 1437547776 1540229760 1617241248 1796934720 1848275712 2021551560 2156321664 2310344640 2395912960 2695402080 3080459520 3234482496 3593869440 4043103120 4312643328 4620689280 5390804160 6468964992 7187738880 8086206240 9241378560 10781608320 12937929984 16172412480 21563216640 32344824960 64689649920
• Sum of all divisors σ(n): 262353450240
• Sum of proper divisors (its aliquot sum) s(n): 197663800320
• 64689649920 is an abundant number, because the sum of its proper divisors (197663800320) is greater than itself. Its abundance is 132974150400

Bases of 64689649920

• Binary: 111100001111110011011011100100000000₂
• Hexadecimal: 0xF0FCDB900
• Base-36: TPUJPC0

Squares and roots of 64689649920

• 64689649920 squared (64689649920²) is 4184750806772156006400
• 64689649920 cubed (64689649920³) is 270710064692528337257641279488000
• The square root of 64689649920 is 254341.6008442189
• The cube root of 64689649920 is 4014.3164056679

Scales and comparisons

• 64,689,649,920 seconds is equal to 2,056 years, 48 weeks, 2 days, 19 hours, 12 minutes.
• To count from 1 to 64,689,649,920 would take you about four thousand, one hundred thirteen 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 64689649920 cubic inches would be around 334.5 feet tall.

Recreational maths with 64689649920

• 64689649920 backwards is 02994698646
• 64689649920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 64689649920's digits is 63
• More coming soon!