64491008353736640

Names of 64491008353736640

• Cardinal: 64491008353736640 can be written as Sixty-four quadrillion, four hundred ninety-one trillion, eight billion, three hundred fifty-three million, seven hundred thirty-six thousand, six hundred forty.

Scientific notation

• Scientific notation: 6.449100835373664 × 10¹⁶

Factors of 64491008353736640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 11161012897

Divisors of 64491008353736640

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 64 65 78 80 96 104 120 130 156 160 192 195 208 240 260 312 320 390 416 463 480 520 624 780 832 926 960 1040 1248 1389 1560 1852 2080 2315 2496 2778 3120 3704 4160 4630 5556 6019 6240 6945 7408 9260 11112 12038 12480 13890 14816 18057 18520 22224 24076 27780 29632 30095 36114 37040 44448 48152 55560 60190 72228 74080 88896 90285 96304 111120 120380 144456 148160 180570 192608 222240 240760 288912 361140 385216 444480 481520 577824 722280 963040 1155648 1444560 1926080 2889120 5778240 11161012411 22322024822 33483037233 44644049644 55805062055 66966074466 89288099288 111610124110 133932148932 145093161343 167415186165 178576198576 223220248220 267864297864 290186322686 334830372330 357152397152 435279484029 446440496440 535728595728 580372645372 669660744660 714304794304 725465806715 870558968058 892880992880 1071457191456 1160745290744 1339321489320 1450931613430 1741117936116 1785761985760 2142914382912 2176397420145 2321490581488 2678642978640 2901863226860 3482235872232 3571523971520 4352794840290 4642981162976 5167548746293 5357285957280 5803726453720 6964471744464 8705589680580 9285962325952 10335097492586 10714571914560 11607452907440 13928943488928 15502646238879 17411179361160 20670194985172 23214905814880 25837743731465 27857886977856 31005292477758 34822358722320 41340389970344 46429811629760 51675487462930 62010584955516 67178133701809 69644717444640 77513231194395 82680779940688 103350974925860 124021169911032 134356267403618 139289434889280 155026462388790 165361559881376 201534401105427 206701949851720 248042339822064 268712534807236 310052924777580 330723119762752 335890668509045 403068802210854 413403899703440 496084679644128 537425069614472 620105849555160 671781337018090 806137604421708 826807799406880 992169359288256 1007672005527135 1074850139228944 1240211699110320 1343562674036180 1612275208843416 1653615598813760 2015344011054270 2149700278457888 2480423398220640 2687125348072360 3224550417686832 4030688022108540 4299400556915776 4960846796441280 5374250696144720 6449100835373664 8061376044217080 10748501392289440 12898201670747328 16122752088434160 21497002784578880 32245504176868320 64491008353736640
• Sum of all divisors σ(n): 220985902843216896
• Sum of proper divisors (its aliquot sum) s(n): 156494894489480256
• 64491008353736640 is an abundant number, because the sum of its proper divisors (156494894489480256) is greater than itself. Its abundance is 92003886135743616

Bases of 64491008353736640

• Binary: 11100101000111100011101011111100001000011001011111000000₂
• Hexadecimal: 0xE51E3AFC2197C0
• Base-36: HN05K8HBMIO

Squares and roots of 64491008353736640

• 64491008353736640 squared (64491008353736640²) is 4159090158481729085395850478489600
• 64491008353736640 cubed (64491008353736640³) is 268223918154589036418490824433277839720103378944000
• The square root of 64491008353736640 is 253950799.0807208307
• The cube root of 64491008353736640 is 401020.3291782137

Scales and comparisons

• 64,491,008,353,736,640 seconds is equal to 2,050,614,581 years, 44 weeks, 5 days, 21 hours, 4 minutes.
• To count from 1 to 64,491,008,353,736,640 would take you about six billion, one hundred fifty-one million, eight hundred forty-three thousand, seven hundred forty-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 64491008353736640 cubic inches would be around 33418.4 feet tall.

Recreational maths with 64491008353736640

• 64491008353736640 backwards is 04663735380019446
• The number of decimal digits it has is: 17
• The sum of 64491008353736640's digits is 69
• More coming soon!