645720849000

Names of 645720849000

• Cardinal: 645720849000 can be written as Six hundred forty-five billion, seven hundred twenty million, eight hundred forty-nine thousand.

Scientific notation

• Scientific notation: 6.45720849 × 10¹¹

Factors of 645720849000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 398

Divisors of 645720849000

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 41 45 50 54 60 72 75 82 90 100 108 120 123 125 135 150 164 180 200 205 216 225 246 250 270 300 328 347 360 369 375 410 450 492 500 540 600 615 675 694 738 750 820 900 984 1000 1025 1041 1080 1107 1125 1230 1350 1388 1476 1500 1640 1681 1735 1800 1845 2050 2082 2214 2250 2460 2700 2776 2952 3000 3075 3123 3362 3375 3470 3690 4100 4164 4428 4500 4920 5043 5125 5205 5400 5535 6150 6246 6724 6750 6940 7380 8200 8328 8405 8675 8856 9000 9225 9369 10086 10250 10410 11070 12300 12492 13448 13500 13880 14227 14760 15129 15375 15615 16810 17350 18450 18738 20172 20500 20820 22140 24600 24984 25215 26025 27000 27675 28454 30258 30750 31230 33620 34700 36900 37476 40344 41000 41640 42025 42681 43375 44280 45387 46125 46845 50430 52050 55350 56908 60516 61500 62460 67240 68921 69400 71135 73800 74952 75645 78075 84050 85362 86750 90774 92250 93690 100860 104100 110700 113816 121032 123000 124920 126075 128043 130125 137842 138375 142270 151290 156150 168100 170724 173500 181548 184500 187380 201720 206763 208200 210125 213405 221400 226935 234225 252150 256086 260250 275684 276750 284540 302580 312300 336200 341448 344605 347000 355675 363096 369000 374760 378225 384129 390375 413526 420250 426810 453870 468450 504300 512172 520500 551368 553500 569080 583307 605160 620289 624600 630375 640215 689210 711350 756450 768258 780750 827052 840500 853620 907740 936900 1008600 1024344 1033815 1041000 1067025 1107000 1134675 1166614 1171125 1240578 1260750 1280430 1378420 1422700 1512900 1536516 1561500 1654104 1681000 1707240 1723025 1749921 1778375 1815480 1860867 1873800 1891125 1920645 2067630 2134050 2269350 2333228 2342250 2481156 2521500 2560860 2756840 2845400 2916535 3025800 3073032 3101445 3123000 3201075 3446050 3499842 3556750 3721734 3782250 3841290 4135260 4268100 4538700 4666456 4684500 4962312 5043000 5121720 5169075 5249763 5335125 5673375 5833070 6202890 6402150 6892100 6999684 7113500 7443468 7564500 7682580 8270520 8536200 8615125 8749605 9077400 9304335 9369000 9603225 10338150 10499526 10670250 11346750 11666140 12405780 12804300 13784200 13999368 14227000 14582675 14886936 15129000 15365160 15507225 15749289 16005375 17230250 17499210 18608670 19206450 20676300 20999052 21340500 22693500 23332280 23915587 24811560 25608600 25845375 26248815 29165350 31014450 31498578 32010750 34460500 34998420 37217340 38412900 41352600 41998104 42681000 43748025 45387000 46521675 47831174 48016125 51690750 52497630 58330700 62028900 62997156 64021500 68921000 69996840 71746761 72913375 74434680 76825800 77536125 78746445 87496050 93043350 95662348 96032250 103381500 104995260 116661400 119577935 124057800 125994312 128043000 131244075 143493522 145826750 155072250 157492890 174992100 186086700 191324696 192064500 206763000 209990520 215240283 218740125 232608375 239155870 262488150 286987044 291653500 310144500 314985780 349984200 358733805 372173400 384129000 393732225 430480566 437480250 465216750 478311740 524976300 573974088 583307000 597889675 620289000 629971560 645720849 656220375 717467610 787464450 860961132 874960500 930433500 956623480 1049952600 1076201415 1195779350 1291441698 1312440750 1434935220 1574928900 1721922264 1749921000 1793669025 1860867000 1968661125 2152402830 2391558700 2582883396 2624881500 2869870440 2989448375 3149857800 3228604245 3587338050 3937322250 4304805660 4783117400 5165766792 5249763000 5381007075 5978896750 6457208490 7174676100 7874644500 8609611320 8968345125 10762014150 11957793500 12914416980 14349352200 15749289000 16143021225 17936690250 21524028300 23915587000 25828833960 26905035375 32286042450 35873380500 43048056600 53810070750 64572084900 71746761000 80715106125 107620141500 129144169800 161430212250 215240283000 322860424500 645720849000
• Sum of all divisors σ(n): 2301072883200
• Sum of proper divisors (its aliquot sum) s(n): 1655352034200
• 645720849000 is an abundant number, because the sum of its proper divisors (1655352034200) is greater than itself. Its abundance is 1009631185200

Bases of 645720849000

• Binary: 1001011001010111111101100011101001101000₂
• Hexadecimal: 0x9657F63A68
• Base-36: 88N1IRU0

Squares and roots of 645720849000

• 645720849000 squared (645720849000²) is 416955414833280801000000
• 645720849000 cubed (645720849000³) is 269236804461293272277120049000000000
• The square root of 645720849000 is 803567.5758764785
• The cube root of 645720849000 is 8643.3401196563

Scales and comparisons

• 645,720,849,000 seconds is equal to 20,531 years, 48 weeks, 22 hours, 30 minutes.
• To count from 1 to 645,720,849,000 would take you about forty-one thousand and sixty-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 645720849000 cubic inches would be around 720.3 feet tall.

Recreational maths with 645720849000

• 645720849000 backwards is 000948027546
• 645720849000 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 645720849000's digits is 45
• More coming soon!