64640372720

Names of 64640372720

• Cardinal: 64640372720 can be written as Sixty-four billion, six hundred forty million, three hundred seventy-two thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.464037272 × 10¹⁰

Factors of 64640372720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 608

Divisors of 64640372720

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 19 20 22 28 35 38 40 44 49 55 56 70 76 77 80 88 95 98 110 112 133 140 152 154 176 190 196 209 220 245 257 266 280 304 307 308 380 385 392 418 440 490 514 532 539 560 614 616 665 760 770 784 836 880 931 980 1028 1045 1064 1078 1228 1232 1285 1330 1463 1520 1535 1540 1672 1799 1862 1960 2056 2090 2128 2149 2156 2456 2570 2660 2695 2827 2926 3070 3080 3344 3377 3598 3724 3920 4112 4180 4298 4312 4655 4883 4912 5140 5320 5390 5654 5833 5852 6140 6160 6754 7196 7315 7448 8360 8596 8624 8995 9310 9766 10241 10280 10640 10745 10780 11308 11666 11704 12280 12593 13508 14135 14392 14630 14896 15043 16720 16885 17192 17990 18620 19532 19789 20482 20560 21490 21560 22616 23332 23408 23639 24415 24560 25186 27016 28270 28784 29165 29260 30086 33770 34181 34384 35980 37240 39064 39578 40831 40964 42980 43120 45232 46664 47278 48830 50372 51205 53713 54032 56540 58330 58520 60172 62965 64163 67540 68362 71960 74480 75215 78128 78899 79156 81662 81928 85960 93328 94556 97660 98945 100744 102410 107426 113080 116660 117040 118195 120344 125930 128326 135080 136724 138523 143920 150430 157798 158312 163324 163856 165473 170905 171920 189112 195320 197890 201488 204155 204820 214852 226160 233320 236390 239267 240688 251860 256652 268565 270160 273448 277046 285817 300860 315596 316624 320815 326648 330946 341810 375991 378224 390640 394495 395780 408310 409640 429704 449141 466640 472780 478534 503720 513304 537130 546896 552293 554092 571634 601720 631192 641630 653296 661892 683620 692615 751982 788990 791560 816620 819280 827365 859408 867889 898282 945560 957068 1007440 1026608 1074260 1104586 1108184 1143268 1196335 1203440 1262384 1283260 1323784 1367240 1385230 1429085 1499081 1503964 1577980 1583120 1633240 1654730 1735778 1796564 1879955 1891120 1914136 2148520 2209172 2216368 2245705 2286536 2392670 2566520 2631937 2647568 2734480 2761465 2770460 2858170 2998162 3007928 3143987 3155960 3266480 3309460 3471556 3593128 3759910 3828272 3866051 4297040 4339445 4418344 4491410 4573072 4785340 5133040 5263874 5522930 5540920 5716340 5996324 6015856 6075223 6287974 6311920 6618920 6943112 7186256 7495405 7519820 7732102 8678890 8836688 8982820 9570680 10493567 10527748 11045860 11081840 11432680 11992648 12150446 12575948 13159685 13237840 13886224 14990810 15039640 15464204 15719935 16489891 17357780 17965640 19141360 19330255 20987134 21055496 22091720 22865360 23985296 24300892 25151896 26319370 29981620 30079280 30376115 30928408 31439870 32979782 34715560 35931280 38660510 41974268 42110992 42526561 44183440 48601784 50303792 52467835 52638740 59963240 60752230 61856816 62879740 65959564 69431120 73454969 77321020 82449455 83948536 85053122 97203568 104935670 105277480 115429237 119926480 121504460 125759480 131919128 146909938 154642040 164898910 167897072 170106244 209871340 210554960 212632805 230858474 243008920 251518960 263838256 293819876 309284080 329797820 340212488 367274845 419742680 425265610 461716948 486017840 577146185 587639752 659595640 680424976 734549690 808004659 839485360 850531220 923433896 1154292370 1175279504 1319191280 1469099380 1616009318 1701062440 1846867792 2308584740 2938198760 3232018636 3402124880 4040023295 4617169480 5876397520 6464037272 8080046590 9234338960 12928074544 16160093180 32320186360 64640372720
• Sum of all divisors σ(n): 202194558720
• Sum of proper divisors (its aliquot sum) s(n): 137554186000
• 64640372720 is an abundant number, because the sum of its proper divisors (137554186000) is greater than itself. Its abundance is 72913813280

Bases of 64640372720

• Binary: 111100001100110111011100111111110000₂
• Hexadecimal: 0xF0CDDCFF0
• Base-36: TP17ISW

Squares and roots of 64640372720

• 64640372720 squared (64640372720²) is 4178377785380520198400
• 64640372720 cubed (64640372720³) is 270091897411964992652064347648000
• The square root of 64640372720 is 254244.7103087889
• The cube root of 64640372720 is 4013.2968478143

Scales and comparisons

• 64,640,372,720 seconds is equal to 2,055 years, 18 weeks, 6 days, 11 hours, 5 minutes, 20 seconds.
• To count from 1 to 64,640,372,720 would take you about four thousand, one hundred ten 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 64640372720 cubic inches would be around 334.4 feet tall.

Recreational maths with 64640372720

• 64640372720 backwards is 02727304646
• The number of decimal digits it has is: 11
• The sum of 64640372720's digits is 41
• More coming soon!