1645455855413520

Names of 1645455855413520

• Cardinal: 1645455855413520 can be written as One quadrillion, six hundred forty-five trillion, four hundred fifty-five billion, eight hundred fifty-five million, four hundred thirteen thousand, five hundred twenty.

Scientific notation

• Scientific notation: 1.64545585541352 × 10¹⁵

Factors of 1645455855413520

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 675865

Divisors of 1645455855413520

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 61 72 80 81 90 108 120 122 135 144 162 180 183 216 240 244 270 305 324 360 366 405 432 488 540 549 610 648 720 732 810 915 976 1080 1098 1220 1296 1464 1620 1647 1830 2160 2196 2440 2745 2928 3240 3294 3660 4392 4880 4941 5490 6217 6480 6588 7320 8235 8784 9882 10980 12434 13176 14640 16470 18651 19764 21960 24705 24868 26352 31085 32940 37302 39528 43920 49410 49736 55953 62170 65880 74604 79056 93255 98820 99472 111906 124340 131760 149208 167859 186510 197640 223812 248680 279765 298416 335718 373020 379237 395280 447624 497360 503577 559530 669577 671436 746040 758474 839295 895248 1007154 1119060 1137711 1339154 1342872 1492080 1516948 1678590 1896185 2008731 2014308 2238120 2275422 2517885 2678308 2685744 3033896 3347885 3357180 3413133 3792370 4017462 4028616 4476240 4550844 5035770 5356616 5688555 6026193 6067792 6695770 6714360 6826266 7584740 8034924 8057232 9101688 10043655 10071540 10239399 10713232 11377110 12052386 13391540 13428720 13652532 15169480 16069848 17065665 18078579 18203376 20087310 20143080 20478798 22754220 24104772 26783080 27305064 30130965 30338960 30718197 32139696 34131330 36157158 40174620 40286160 40844197 40957596 45508440 48209544 51196995 53566160 54235737 54610128 60261930 61436394 68262660 72314316 80349240 81688394 81915192 90392895 91016880 96419088 102393990 108471474 120523860 122532591 122872788 136525320 144628632 153590985 160698480 163376788 163830384 180785790 204220985 204787980 216942948 241047720 245065182 245745576 271178685 273050640 289257264 307181970 326753576 361571580 367597773 408441970 409575960 433885896 482095440 490130364 491491152 542357370 612662955 614363940 653507152 723143160 735195546 816883940 819151920 867771792 980260728 1084714740 1102793319 1225325910 1228727880 1446286320 1470391092 1633767880 1837988865 1960521456 2169429480 2205586638 2450651820 2457455760 2940782184 3267535760 3308379957 3675977730 4162760209 4338858960 4411173276 4901303640 5513966595 5881564368 6616759914 7351955460 8325520418 8822346552 9802607280 11027933190 12488280627 13233519828 14703910920 16541899785 16651040836 17644693104 20813801045 22055866380 24976561254 26467039656 29407821840 33083799570 33302081672 37464841881 41627602090 44111732760 49953122508 52934079312 62441403135 66167599140 66604163344 74929683762 83255204180 88223465520 99906245016 112394525643 124882806270 132335198280 149859367524 166510408360 187324209405 199812490032 224789051286 249765612540 253928372749 264670396560 299718735048 333020816720 337183576929 374648418810 449578102572 499531225080 507856745498 561972628215 599437470096 674367153858 749296837620 761785118247 899156205144 999062450160 1015713490996 1123945256430 1269641863745 1348734307716 1498593675240 1523570236494 1685917884645 1798312410288 2031426981992 2247890512860 2285355354741 2539283727490 2697468615432 2997187350480 3047140472988 3371835769290 3808925591235 4062853963984 4495781025720 4570710709482 5078567454980 5394937230864 6094280945976 6743671538580 6856066064223 7617851182470 8991562051440 9141421418964 10157134909960 11426776773705 12188561891952 13487343077160 13712132128446 15235702364940 18282842837928 20314269819920 20568198192669 22853553547410 26974686154320 27424264256892 30471404729880 34280330321115 36565685675856 41136396385338 45707107094820 54848528513784 60942809459760 68560660642230 82272792770676 91414214189640 102840990963345 109697057027568 137121321284460 164545585541352 182828428379280 205681981926690 274242642568920 329091171082704 411363963853380 548485285137840 822727927706760 1645455855413520
• Sum of all divisors σ(n): 5809542023773488
• Sum of proper divisors (its aliquot sum) s(n): 4164086168359968
• 1645455855413520 is an abundant number, because the sum of its proper divisors (4164086168359968) is greater than itself. Its abundance is 2518630312946448

Bases of 1645455855413520

• Binary: 101110110001000100010001011110000010110100100010000₂
• Hexadecimal: 0x5D8888BC16910
• Base-36: G79JZFWH00

Squares and roots of 1645455855413520

• 1645455855413520 squared (1645455855413520²) is 2707524972114638835490198790400
• 1645455855413520 cubed (1645455855413520³) is 4455112819044359929536574846029504795806208000
• The square root of 1645455855413520 is 40564218.9055024207
• The cube root of 1645455855413520 is 118057.9973300791

Scales and comparisons

• 1,645,455,855,413,520 seconds is equal to 52,320,406 years, 24 weeks, 4 days, 4 hours, 12 minutes.
• To count from 1 to 1,645,455,855,413,520 would take you about one hundred fifty-six million, nine hundred sixty-one thousand, two hundred nineteen 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 1645455855413520 cubic inches would be around 9838.2 feet tall.

Recreational maths with 1645455855413520

• 1645455855413520 backwards is 0253145585545461
• The number of decimal digits it has is: 16
• The sum of 1645455855413520's digits is 63
• More coming soon!