640409494725

Names of 640409494725

• Cardinal: 640409494725 can be written as Six hundred forty billion, four hundred nine million, four hundred ninety-four thousand, seven hundred twenty-five.

Scientific notation

• Scientific notation: 6.40409494725 × 10¹¹

Factors of 640409494725

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 91

Divisors of 640409494725

• Number of divisors d(n): 1152
• Complete list of divisors:
  1 3 5 7 9 11 13 15 21 23 25 27 29 33 35 39 45 49 55 63 65 69 75 77 87 91 99 105 115 117 135 143 145 147 161 165 175 189 195 203 207 225 231 245 253 261 273 275 297 299 315 319 325 343 345 351 377 385 429 435 441 455 483 495 525 539 575 585 609 621 637 667 675 693 715 725 735 759 783 805 819 825 841 897 945 957 975 1001 1015 1029 1035 1127 1131 1155 1225 1265 1287 1305 1323 1365 1421 1449 1485 1495 1575 1595 1617 1715 1725 1755 1771 1827 1885 1911 1925 2001 2079 2093 2145 2175 2205 2233 2275 2277 2415 2457 2475 2523 2639 2691 2695 2871 2925 3003 3045 3087 3105 3185 3289 3335 3381 3393 3465 3575 3675 3773 3795 3861 3915 4025 4095 4147 4205 4263 4347 4459 4485 4669 4725 4785 4851 5005 5075 5145 5175 5313 5481 5635 5655 5733 5775 5887 6003 6279 6325 6435 6525 6615 6699 6825 6831 7007 7105 7245 7337 7425 7475 7569 7889 7917 7975 8073 8085 8575 8613 8671 8775 8855 9009 9135 9251 9261 9425 9555 9867 9947 10005 10143 10179 10395 10465 10725 10933 11025 11165 11319 11385 12075 12285 12397 12441 12615 12789 13195 13377 13455 13475 14007 14355 14553 14651 15015 15225 15435 15525 15631 15925 15939 16445 16675 16905 16965 17199 17325 17661 18009 18473 18837 18865 18975 19305 19343 19575 20097 20475 20735 21021 21025 21315 21735 22011 22295 22425 22707 23023 23345 23667 23751 23925 24255 25025 25725 26013 26565 27027 27405 27753 28175 28275 28665 29029 29435 29601 29841 30015 30429 31395 32175 32683 32799 33075 33495 33957 34155 35035 35525 36225 36685 37191 37323 37845 38367 39445 39585 40131 40365 40425 41209 42021 43065 43355 43953 44275 45045 45675 46255 46305 46893 47775 47817 49049 49335 49735 50025 50715 50895 51359 51975 52325 52983 54665 55419 55825 56511 56595 56925 58029 60291 60697 61425 61985 62205 63063 63075 63945 64757 65975 66033 66885 67275 69069 70035 71001 71253 71775 72765 73255 75075 76531 77175 78039 78155 79695 82225 83259 84525 84825 85995 86779 87087 88305 88803 89523 90045 92365 94185 94325 95381 96525 96715 98049 98397 100485 101871 102557 103675 105105 106575 108675 109417 110055 111475 111573 111969 113535 115115 116725 118335 118755 120263 120393 121275 123627 126063 129311 130065 131859 132825 135135 135401 137025 138765 140679 143325 145145 147147 147175 148005 149205 150075 152145 154077 156975 158949 161161 163415 163995 166257 167475 169785 170775 174087 175175 182091 183425 185955 186615 189189 189225 191835 194271 197225 197925 198099 200655 201825 203203 206045 207207 210105 212773 213003 215325 216775 219765 225225 228781 229593 231275 231525 234117 234465 239085 245245 246675 248675 249777 251459 253575 254475 256795 260337 261261 264915 268569 273325 277095 282555 282975 286143 288463 290145 294147 295191 301455 303485 307671 309925 311025 315315 319725 323785 328251 330165 334425 334719 345345 350175 355005 356265 359513 360789 363825 366275 370881 382655 387933 390195 390775 395577 398475 406203 416295 422037 424879 429975 433895 435435 441441 441525 444015 447615 450225 453299 461825 462231 470925 476905 483483 483575 490245 491985 498771 502425 509355 512785 522261 525525 535717 546273 547085 550275 557865 559845 567675 575575 582813 591675 593775 601315 601965 609609 618135 621621 630315 638319 646555 650325 659295 667667 675675 677005 686343 688779 693825 703395 725725 735735 740025 746025 754377 760725 770385 781011 783783 794745 805805 817075 819975 831285 841841 848925 858429 865389 870435 882441 910455 923013 929775 933075 945945 947807 959175 971355 984753 990495 1003275 1016015 1030225 1036035 1050525 1063865 1065015 1078539 1082367 1098825 1112643 1128127 1143905 1147965 1163799 1170585 1172325 1195425 1218609 1226225 1248885 1257295 1274637 1283975 1301685 1306305 1324323 1324575 1342845 1359897 1385475 1386693 1412775 1422421 1430715 1442315 1450449 1450725 1470735 1475955 1489411 1507275 1517425 1538355 1576575 1607151 1618925 1638819 1641255 1650825 1673595 1726725 1748439 1760213 1775025 1781325 1797565 1803945 1828827 1854405 1913275 1914957 1939665 1950975 1977885 2003001 2031015 2059029 2066337 2081475 2110185 2124395 2169475 2177175 2207205 2220075 2238075 2263131 2266495 2311155 2343033 2384525 2417415 2451225 2459925 2493855 2516591 2525523 2546775 2563925 2575287 2596167 2611305 2678585 2731365 2735425 2766049 2769039 2789325 2799225 2843421 2914065 2954259 2974153 3006575 3009825 3048045 3090675 3108105 3151575 3173093 3191595 3232775 3235617 3247101 3296475 3338335 3384381 3385025 3431715 3443895 3491397 3516975 3655827 3678675 3750019 3771885 3823911 3851925 3905055 3918915 3973725 4029025 4079691 4156425 4209205 4267263 4292145 4326945 4351347 4352175 4412205 4468233 4552275 4615065 4673669 4729725 4739035 4821453 4856775 4923765 4952475 5080075 5180175 5280639 5319325 5325075 5392695 5411835 5486481 5563215 5640635 5719525 5739825 5744871 5818995 5852925 5892887 6009003 6093045 6177087 6244425 6286475 6373185 6508425 6531525 6621615 6634649 6714225 6789393 6799485 6933465 7112105 7153575 7211575 7252245 7353675 7379775 7447055 7549773 7576569 7691775 7788501 8035755 8194095 8206275 8298147 8367975 8530263 8742195 8801065 8922459 8987825 9019725 9144135 9272025 9519279 9574785 9698325 9706851 9889425 10015005 10153143 10155075 10295145 10331685 10425877 10550925 10621975 11036025 11250057 11315655 11332475 11471733 11555775 11715165 12087075 12239073 12321491 12469275 12582955 12627615 12801789 12876435 12980835 13056525 13392925 13404699 13656825 13830245 13845195 14021007 14217105 14464359 14570325 14771295 14870765 15240225 15540525 15841917 15865465 15957975 16178085 16235505 16691675 16921905 17158575 17219475 17456985 17678661 18027009 18279135 18750095 18859425 19119555 19362343 19525275 19594575 19903947 20398455 21046025 21336315 21460725 21634725 21756735 22061025 22341165 22649319 22729707 23075325 23368345 23695175 24107265 24618825 24894441 25590789 26403195 26767377 26963475 27059175 27432405 27816075 28203175 28557837 28724355 29094975 29464435 30045015 30459429 30465225 30885435 31277631 31865925 32715683 33108075 33173245 33750171 33946965 33997425 34667325 35560525 36261225 36964473 37235275 37748865 37882845 38405367 38942505 40178775 40214097 40970475 41250209 41490735 42063021 42651315 43710975 44005325 44612295 45720675 47525751 47596395 47873925 48534255 50075025 50765715 51475725 51658425 52129385 53035983 56250285 56578275 57358665 58087029 58575825 59711841 61195365 61607455 62914775 63138075 64008945 64382175 64904175 67023495 67947957 69151225 69225975 70105035 71085525 72321795 72981139 73856475 74353825 74683323 79209585 79327325 80302131 80890425 81177525 84609525 85673511 86250437 87284925 88393305 90135045 91395675 93750475 93832893 95597775 96811715 98147049 99519735 101250513 101992275 106681575 108783675 110893419 111705825 113246595 113648535 116841725 120536325 123750627 124472205 126189063 127953945 132015975 133836885 135536401 137162025 142789185 143621775 147322175 150225075 152297145 154427175 156388155 159107949 163578415 165866225 168750855 169734825 174261087 179135523 184822365 188744325 189414225 192026835 194712525 201070485 206251045 207453675 210315105 213256575 218943417 223061475 237628755 237981975 242671275 253828575 258751311 260646925 265179915 281251425 281498679 286793325 290435145 294441147 298559205 305976825 308037275 320044725 332680257 335117475 339739785 350525175 361608975 364905695 371251881 373416615 396047925 401510655 406609203 428367555 431252185 441966525 450675225 469164465 484058575 490735245 497598675 506252565 522783261 554467095 566232975 568242675 618753135 622361025 630945315 639769725 656830251 669184425 677682005 713945925 761485725 776253933 781940775 795539745 817892075 843754275 871305435 883323441 895677615 924111825 948754807 960134175 1005352425 1031255225 1051575525 1094717085 1113755643 1188143775 1219827609 1293756555 1325899575 1407493395 1452175725 1472205735 1492796025 1663401285 1698698925 1824528475 1856259405 1867083075 1970490753 2007553275 2033046015 2141837775 2156260925 2328761799 2345822325 2453676225 2531262825 2613916305 2772335475 2846264421 3093765675 3154726575 3284151255 3388410025 3659482827 3881269665 3977698725 4356527175 4416617205 4478388075 4743774035 5473585425 5568778215 6099138045 6468782775 7037466975 7361028675 8317006425 8538793263 9281297025 9852453765 10165230075 11643808995 13069581525 14231322105 16420756275 18297414135 19406348325 22083086025 23718870175 25616379789 27843891075 30495690225 42693966315 49262268825 58219044975 71156610525 91487070675 128081898945 213469831575 640409494725
• Sum of all divisors σ(n): 1741888512000
• Sum of proper divisors (its aliquot sum) s(n): 1101479017275
• 640409494725 is an abundant number, because the sum of its proper divisors (1101479017275) is greater than itself. Its abundance is 461069522550

Bases of 640409494725

• Binary: 1001010100011011011000010110010011000101₂
• Hexadecimal: 0x951B6164C5
• Base-36: 8677A0N9

Squares and roots of 640409494725

• 640409494725 squared (640409494725²) is 410124320933929802825625
• 640409494725 cubed (640409494725³) is 262647509143731725136177383532328125
• The square root of 640409494725 is 800255.8932772691
• The cube root of 640409494725 is 8619.5763466843

Scales and comparisons

• 640,409,494,725 seconds is equal to 20,363 years, 2 weeks, 22 hours, 18 minutes, 45 seconds.
• To count from 1 to 640,409,494,725 would take you about forty thousand, seven hundred twenty-six 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 640409494725 cubic inches would be around 718.3 feet tall.

Recreational maths with 640409494725

• 640409494725 backwards is 527494904046
• The number of decimal digits it has is: 12
• The sum of 640409494725's digits is 54
• More coming soon!