642978243648

Names of 642978243648

• Cardinal: 642978243648 can be written as Six hundred forty-two billion, nine hundred seventy-eight million, two hundred forty-three thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 6.42978243648 × 10¹¹

Factors of 642978243648

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 144

Divisors of 642978243648

• Number of divisors d(n): 840
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 19 24 26 27 32 36 38 39 48 52 54 57 64 72 76 78 81 96 104 107 108 114 117 144 152 156 162 169 171 192 208 214 216 228 234 247 288 304 312 321 324 338 342 351 361 416 428 432 456 468 494 507 513 576 608 624 642 648 676 684 702 722 741 832 856 864 912 936 963 988 1014 1026 1053 1083 1216 1248 1284 1296 1352 1368 1391 1404 1444 1482 1521 1539 1712 1728 1824 1872 1926 1976 2028 2033 2052 2106 2166 2223 2496 2568 2592 2704 2736 2782 2808 2888 2889 2964 3042 3078 3211 3249 3424 3648 3744 3852 3952 4056 4066 4104 4173 4212 4332 4446 4563 4693 5136 5184 5408 5472 5564 5616 5776 5778 5928 6084 6099 6156 6422 6498 6669 6848 6859 7488 7704 7904 8112 8132 8208 8346 8424 8664 8667 8892 9126 9386 9633 9747 10272 10816 10944 11128 11232 11552 11556 11856 12168 12198 12312 12519 12844 12996 13338 13689 13718 14079 15408 15808 16224 16264 16416 16692 16848 17328 17334 17784 18083 18252 18297 18772 19266 19494 20007 20544 20577 22256 22464 23104 23112 23712 24336 24396 24624 25038 25688 25992 26429 26676 27378 27436 28158 28899 29241 30816 32448 32528 32832 33384 33696 34656 34668 35568 36166 36504 36594 37544 37557 38532 38627 38988 40014 41154 42237 44512 46224 47424 48672 48792 49248 50076 51376 51984 52858 53352 54249 54756 54872 54891 56316 57798 58482 61009 61632 61731 65056 66768 67392 69312 69336 71136 72332 73008 73188 75088 75114 77064 77254 77976 79287 80028 82308 84474 86697 89024 89167 92448 97344 97584 98496 100152 102752 103968 105716 106704 108498 109512 109744 109782 112632 112671 115596 115881 116964 122018 123462 126711 130112 133536 138672 142272 144664 146016 146376 150176 150228 154128 154508 155952 158574 160056 162747 164616 164673 168948 173394 178334 183027 184896 185193 195168 200304 205504 207936 211432 213408 216996 219024 219488 219564 225264 225342 231192 231762 233928 237861 244036 246924 253422 260091 267072 267501 277344 289328 292032 292752 300352 300456 308256 309016 311904 317148 320112 325494 329232 329346 337896 343577 346788 347643 356668 366054 370386 380133 390336 400608 422864 426816 433992 438048 438976 439128 450528 450684 462384 463524 467856 475722 488072 488241 493848 502151 506844 520182 535002 549081 554688 555579 578656 585504 600912 616512 618032 623808 634296 640224 650988 658464 658692 675792 687154 693576 695286 713336 713583 732108 733913 740772 760266 801216 802503 845728 867984 876096 878256 901056 901368 924768 927048 935712 951444 976144 976482 987696 1004302 1013688 1030731 1040364 1042929 1070004 1098162 1111158 1157312 1159171 1171008 1201824 1236064 1268592 1280448 1301976 1316928 1317384 1351584 1374308 1387152 1390572 1426672 1427166 1464216 1464723 1467826 1481544 1506453 1520532 1605006 1647243 1691456 1735968 1756512 1802736 1849536 1854096 1871424 1902888 1952288 1952964 1975392 2008604 2027376 2061462 2080728 2085858 2140008 2140749 2196324 2201739 2222316 2318342 2403648 2407509 2472128 2537184 2603952 2634768 2703168 2748616 2774304 2781144 2853344 2854332 2928432 2929446 2935652 2963088 3012906 3041064 3092193 3128787 3210012 3294486 3471936 3477513 3513024 3605472 3708192 3805776 3904576 3905928 3950784 4017208 4054752 4122924 4161456 4171716 4280016 4281498 4392648 4403478 4444632 4519359 4636684 4815018 4941729 5074368 5207904 5269536 5497232 5548608 5562288 5706688 5708664 5856864 5858892 5871304 5926176 6025812 6082128 6184386 6257574 6420024 6527963 6588972 6605217 6955026 7210944 7222527 7416384 7611552 7811856 8034416 8109504 8245848 8322912 8343432 8560032 8562996 8785296 8806956 8889264 9038718 9273368 9276579 9540869 9630036 9883458 10415808 10432539 10539072 10994464 11124576 11417328 11713728 11717784 11742608 11852352 12051624 12164256 12368772 12515148 12840048 13055926 13177944 13210434 13558077 13910052 14445054 15223104 15623712 16068832 16491696 16645824 16686864 17120064 17125992 17570592 17613912 17778528 18077436 18546736 18553158 19081738 19260072 19583889 19766916 19815651 20865078 21988928 22249152 22834656 23435568 23485216 24103248 24328512 24737544 25030296 25680096 26111852 26355888 26420868 27116154 27820104 27829737 28622607 28890108 31247424 31297617 32137664 32983392 33373728 34251984 35141184 35227824 35557056 36154872 37093472 37106316 38163476 38520144 39167778 39533832 39631302 40674231 41730156 45669312 46871136 46970432 48206496 49475088 50060592 51360192 52223704 52711776 52841736 54232308 55640208 55659474 57245214 57780216 58751667 59446953 62595234 65966784 66747456 68503968 70455648 72309744 74186944 74212632 76326952 77040288 78335556 79067664 79262604 81348462 83460312 85867821 93742272 93892851 96412992 98950176 100121184 104447408 105423552 105683472 108464616 111280416 111318948 114490428 115560432 117503334 118893906 124031297 125190468 137007936 140911296 144619488 148425264 152653904 154080576 156671112 158135328 158525208 162696924 166920624 171735642 176255001 187785702 197900352 200242368 208894816 211366944 216929232 222560832 222637896 228980856 231120864 235006668 237787812 248062594 250380936 257603463 289238976 296850528 305307808 313342224 316270656 317050416 325393848 333841248 343471284 352510002 372093891 375571404 417789632 422733888 433858464 445275792 457961712 462241728 470013336 475575624 496125188 500761872 515206926 528765003 593701056 610615616 626684448 634100832 650787696 667682496 686942568 705020004 744187782 751142808 772810389 867716928 890551584 915923424 940026672 951151248 992250376 1001523744 1030413852 1057530006 1116281673 1253368896 1268201664 1301575392 1373885136 1410040008 1488375564 1502285616 1545620778 1781103168 1831846848 1880053344 1902302496 1984500752 2003047488 2060827704 2115060012 2232563346 2603150784 2747770272 2820080016 2976751128 3004571232 3091241556 3348845019 3760106688 3804604992 3969001504 4121655408 4230120024 4465126692 5495540544 5640160032 5953502256 6009142464 6182483112 6697690038 7938003008 8243310816 8460240048 8930253384 10046535057 11280320064 11907004512 12364966224 13395380076 16486621632 16920480096 17860506768 20093070114 23814009024 24729932448 26790760152 33840960192 35721013536 40186140228 49459864896 53581520304 71442027072 80372280456 107163040608 160744560912 214326081216 321489121824 642978243648
• Sum of all divisors σ(n): 2198884929120
• Sum of proper divisors (its aliquot sum) s(n): 1555906685472
• 642978243648 is an abundant number, because the sum of its proper divisors (1555906685472) is greater than itself. Its abundance is 912928441824

Bases of 642978243648

• Binary: 1001010110110100011111010110010001000000₂
• Hexadecimal: 0x95B47D6440
• Base-36: 87DON800

Squares and roots of 642978243648

• 642978243648 squared (642978243648²) is 413421021804666852347904
• 642978243648 cubed (642978243648³) is 265820722487126204052419858974113792
• The square root of 642978243648 is 801859.2417924733
• The cube root of 642978243648 is 8631.0856437015

Scales and comparisons

• 642,978,243,648 seconds is equal to 20,444 years, 37 weeks, 2 days, 19 hours, 40 minutes, 48 seconds.
• To count from 1 to 642,978,243,648 would take you about forty thousand, eight hundred eighty-nine 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 642978243648 cubic inches would be around 719.3 feet tall.

Recreational maths with 642978243648

• 642978243648 backwards is 846342879246
• The number of decimal digits it has is: 12
• The sum of 642978243648's digits is 63
• More coming soon!