21097080728005520

Names of 21097080728005520

• Cardinal: 21097080728005520 can be written as Twenty-one quadrillion, ninety-seven trillion, eighty billion, seven hundred twenty-eight million, five thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.109708072800552 × 10¹⁶

Factors of 21097080728005520

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 260490

Divisors of 21097080728005520

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 61 70 79 80 98 112 122 140 158 196 244 245 280 305 316 392 395 427 488 490 553 560 610 632 784 790 854 976 980 1106 1220 1264 1580 1708 1960 2135 2212 2440 2765 2989 3160 3416 3871 3920 4270 4363 4424 4819 4880 5530 5978 6320 6832 7742 8540 8726 8848 9638 11060 11956 14945 15484 17080 17452 19276 19355 21815 22120 23912 24095 29890 30541 30968 33733 34160 34904 38552 38710 43630 44240 47824 48190 59780 61082 61936 67466 69808 77104 77420 87260 96380 119560 122164 134932 152705 154840 168665 174520 192760 213787 236131 239120 244328 255973 266143 269864 305410 309680 337330 344677 349040 385520 427574 472262 488656 511946 532286 539728 610820 674660 689354 855148 944524 1023892 1064572 1068935 1180655 1221640 1279865 1330715 1349320 1378708 1710296 1723385 1791811 1863001 1889048 2047784 2129144 2137870 2361310 2412739 2443280 2559730 2661430 2698640 2757416 3420592 3446770 3583622 3726002 3778096 4095568 4258288 4275740 4722620 4825478 5119460 5322860 5514832 6893540 7167244 7452004 8551480 8959055 9315005 9445240 9650956 10238920 10645720 12063695 12542677 13041007 13787080 14334488 14904008 15614353 16889173 17102960 17918110 18630010 18890480 19301912 20221867 20477840 21025297 21291440 24127390 25085354 26082014 27574160 28668976 29808016 31228706 33778346 35836220 37260020 38603824 40443734 42050594 48254780 50170708 52164028 62457412 62713385 65205035 67556692 71672440 74520040 78071765 80887468 84101188 84445865 96509560 100341416 101109335 104328056 105126485 109300471 124914824 125426770 130410070 135113384 141553069 143344880 147177079 149040080 156143530 161774936 168202376 168891730 193019120 200682832 202218670 208656112 210252970 218600942 249829648 250853540 260820140 270226768 283106138 294354158 312287060 323549872 336404752 337783460 404437340 420505940 437201884 501707080 521640280 546502355 566212276 588708316 624574120 675566920 707765345 735885395 765103297 808874680 841011880 874403768 990871483 1003414160 1030239553 1043280560 1093004710 1116810199 1132424552 1177416632 1233533887 1249148240 1351133840 1415530690 1471770790 1530206594 1617749360 1682023760 1748807536 1981742966 2060479106 2186009420 2233620398 2264849104 2354833264 2467067774 2831061380 2943541580 3060413188 3825516485 3963485932 4120958212 4372018840 4467240796 4934135548 4954357415 5151197765 5584050995 5662122760 5887083160 6120826376 6167669435 7651032970 7817671393 7926971864 8241916424 8634737209 8744037680 8934481592 9868271096 9908714830 10302395530 11168101990 11324245520 11774166320 12241652752 12335338870 15302065940 15635342786 15853943728 16483832848 17269474418 17868963184 19736542192 19817429660 20604791060 22336203980 24670677740 30604131880 31270685572 34538948836 39088356965 39634859320 41209582120 43173686045 44672407960 49341355480 54723699751 60443160463 61208263760 62541371144 68125422139 69077897672 78176713930 79269718640 82419164240 86347372090 88228005721 89344815920 98682710960 109447399502 120886320926 125082742288 136250844278 138155795344 156353427860 172694744180 176456011442 218894799004 241772641852 272501688556 273618498755 302215802315 312706855720 340627110695 345389488360 352912022884 437789598008 441140028605 476877954973 483545283704 545003377112 547236997510 604431604630 617596040047 625413711440 681254221390 690778976720 705824045768 875579196016 882280057210 953755909946 967090567408 1090006754224 1094473995020 1208863209260 1235192080094 1362508442780 1411648091536 1764560114420 1907511819892 2188947990040 2384389774865 2417726418520 2470384160188 2725016885560 3087980200235 3338145684811 3529120228840 3815023639784 4323172280329 4377895980080 4768779549730 4835452837040 4940768320376 5381908348981 5450033771120 6175960400470 6676291369622 7058240457680 7630047279568 8646344560658 9537559099460 9881536640752 10763816697962 12351920800940 13352582739244 16690728424055 17292689121316 19075118198920 21527633395924 21615861401645 24703841601880 26705165478488 26909541744905 33381456848110 34585378242632 37673358442867 38150236397840 43055266791848 43231722803290 49407683203760 53410330956976 53819083489810 66762913696220 69170756485264 75346716885734 86110533583696 86463445606580 107638166979620 133525827392440 150693433771468 172926891213160 188366792214335 215276333959240 263713509100069 267051654784880 301386867542936 345853782426320 376733584428670 430552667918480 527427018200138 602773735085872 753467168857340 1054854036400276 1318567545500345 1506934337714680 2109708072800552 2637135091000690 3013868675429360 4219416145601104 5274270182001380 10548540364002760 21097080728005520
• Sum of all divisors σ(n): 58742181840453120
• Sum of proper divisors (its aliquot sum) s(n): 37645101112447600
• 21097080728005520 is an abundant number, because the sum of its proper divisors (37645101112447600) is greater than itself. Its abundance is 16548020384442080

Bases of 21097080728005520

• Binary: 1001010111100111010111011100010100101110010101110010000₂
• Hexadecimal: 0x4AF3AEE2972B90
• Base-36: 5RQAH36YZRK

Squares and roots of 21097080728005520

• 21097080728005520 squared (21097080728005520²) is 445086815243981921755237150470400
• 21097080728005520 cubed (21097080728005520³) is 9390032472173164498662964400466800883521796608000
• The square root of 21097080728005520 is 145248341.5671432719
• The cube root of 21097080728005520 is 276316.9044556289

Scales and comparisons

• 21,097,080,728,005,520 seconds is equal to 670,821,909 years, 30 weeks, 6 days, 15 hours, 45 minutes, 20 seconds.
• To count from 1 to 21,097,080,728,005,520 would take you about two billion, twelve million, four hundred sixty-five thousand, seven hundred twenty-eight 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 21097080728005520 cubic inches would be around 23026.4 feet tall.

Recreational maths with 21097080728005520

• 21097080728005520 backwards is 02550082708079012
• 21097080728005520 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21097080728005520's digits is 56
• More coming soon!