21664157937840

Names of 21664157937840

• Cardinal: 21664157937840 can be written as Twenty-one trillion, six hundred sixty-four billion, one hundred fifty-seven million, nine hundred thirty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.166415793784 × 10¹³

Factors of 21664157937840

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 770

Divisors of 21664157937840

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 33 36 40 44 45 48 54 55 60 66 71 72 80 88 90 99 108 110 120 132 135 142 144 157 165 176 180 198 213 216 220 240 264 270 284 297 314 330 355 360 396 426 432 440 471 495 521 528 540 568 594 628 639 660 710 720 781 785 792 852 880 942 990 1042 1065 1080 1136 1188 1256 1278 1320 1413 1420 1485 1562 1563 1570 1584 1704 1727 1884 1917 1980 2084 2130 2160 2343 2355 2376 2512 2556 2605 2640 2826 2840 2970 3124 3126 3140 3195 3408 3454 3768 3834 3905 3960 4168 4239 4260 4686 4689 4710 4752 5112 5181 5210 5652 5680 5731 5940 6248 6252 6280 6390 6908 7029 7065 7536 7668 7810 7815 7920 8336 8478 8520 8635 9372 9378 9420 9585 10224 10362 10420 11147 11304 11462 11715 11880 12496 12504 12560 12780 13816 14058 14067 14130 15336 15543 15620 15630 16956 17040 17193 17270 18744 18756 18840 19170 20724 20840 21087 21195 22294 22608 22924 23430 23445 23760 24649 25008 25560 25905 27632 28116 28134 28260 28655 30672 31086 31240 31260 33441 33912 34386 34540 35145 36991 37488 37512 37680 38340 41448 41680 42174 42390 44588 45848 46629 46860 46890 49298 51120 51579 51810 55735 56232 56268 56520 57310 62172 62480 62520 66882 67824 68772 69080 70290 70335 73947 73982 75024 76680 77715 81797 82896 84348 84780 85965 89176 91696 93258 93720 93780 98596 100323 103158 103620 105435 110973 111470 112464 112536 113040 114620 122617 123245 124344 125040 133764 137544 138160 140580 140670 147894 147964 153360 154737 155430 163594 167205 168696 169560 171930 178352 184955 186516 187440 187560 197192 200646 206316 207240 210870 221841 221946 222940 225072 229240 233145 245234 245391 246490 248688 257895 267528 271139 275088 281160 281340 295788 295928 300969 309474 310860 327188 332919 334410 337392 339120 343860 367851 369735 369910 373032 375120 394384 401292 406901 408985 412632 414480 421740 443682 443892 445880 458480 466290 490468 490782 492980 501615 515790 535056 542278 554865 562320 562680 591576 591856 601938 613085 618948 621720 654376 665523 665838 668820 687720 735702 736173 739470 739820 746064 773685 802584 813417 813802 817970 825264 843480 887364 887784 891760 899767 932580 980936 981564 985960 998757 1003230 1031580 1084556 1103553 1109205 1109730 1125360 1183152 1203876 1220703 1226170 1226955 1237896 1243440 1308752 1331046 1331676 1337640 1355695 1375440 1471404 1472346 1478940 1479640 1504845 1547370 1605168 1626834 1627604 1635940 1664595 1686960 1750079 1774728 1775568 1799534 1839255 1865160 1961872 1963128 1971920 1997514 2006460 2034505 2063160 2169112 2207106 2208519 2218410 2219460 2407752 2440251 2441406 2452340 2453910 2475792 2662092 2663352 2675280 2699301 2711390 2942808 2944692 2957880 2959280 3009690 3094740 3253668 3255208 3271880 3310659 3327615 3329190 3500158 3549456 3599068 3662109 3678510 3680865 3730320 3926256 3995028 4012920 4067085 4069010 4126320 4338224 4414212 4417038 4436820 4438920 4498835 4815504 4880502 4882812 4904680 4907820 4993785 5250237 5324184 5326704 5398602 5422780 5517765 5807587 5885616 5889384 5915760 6019380 6103515 6189480 6507336 6510416 6543760 6621318 6655230 6658380 7000316 7198136 7320753 7324218 7357020 7361730 7990056 8025840 8097903 8134170 8138020 8750395 8828424 8834076 8873640 8877840 8997670 9761004 9765624 9809360 9815640 9987570 10500474 10648368 10797204 10845560 10986327 11035530 11042595 11615174 11778768 12038760 12201255 12207030 12378960 12842129 13014672 13242636 13310460 13316760 13496505 14000632 14396272 14641506 14648436 14714040 14723460 15750711 15980112 16195806 16268340 16276040 16553295 17422761 17500790 17656848 17668152 17747280 17995340 18310545 19250869 19522008 19531248 19631280 19975140 21000948 21594408 21691120 21972654 22071060 22085190 23230348 24077520 24293709 24402510 24414060 25684258 26251185 26485272 26620920 26633520 26993010 28001264 29037935 29283012 29296872 29428080 29446920 31501422 32391612 32536680 32552080 33106590 34845522 35001580 35336304 35990680 36603765 36621090 38501738 38526387 39044016 39950280 40489515 42001896 43188816 43945308 44142120 44170380 46460696 47252133 48587418 48805020 48828120 51368516 52268283 52502370 52970544 53241840 53986020 54931635 57752607 58075870 58566024 58593744 58893840 63002844 63883457 64210645 64783224 65073360 66213180 69691044 70003160 71981360 73207530 73242180 77003476 77052774 78753555 79900560 80979030 84003792 87113805 87890616 88284240 88340760 92921392 94504266 96254345 97174836 97610040 97656240 102737032 104536566 105004740 107972040 109863270 115505214 115579161 116151740 117132048 121468545 126005688 127766914 128421290 129566448 132426360 139382088 140006320 141263419 146415060 146484360 154006952 154105548 156804849 157507110 161958060 173257821 174227610 175781232 176681520 189008532 191650371 192508690 192631935 194349672 195220080 205474064 209073132 210009480 215944080 219726540 231010428 231158322 232303480 236260665 242937090 252011376 255533828 256842580 261341415 264852720 278764176 282526838 288763035 292830120 292968720 308013904 308211096 313609698 315014220 319417285 323916120 346515642 346737483 348455220 378017064 383300742 385017380 385263870 388699344 418146264 420018960 423790257 439453080 462020856 462316644 464606960 472521330 485874180 511067656 513685160 519773463 522682830 565053676 574951113 577526070 577895805 585660240 616422192 627219396 630028440 638834570 647832240 693031284 693474966 696910440 706317095 756034128 766601484 770034760 770527740 784024245 836292528 847580514 866289105 878906160 911791159 924041712 924633288 945042660 958251855 971748360 1022135312 1027370320 1039546926 1045365660 1130107352 1149902226 1155052140 1155791610 1254438792 1260056880 1271370771 1277669140 1386062568 1386949932 1393820880 1412634190 1533202968 1540069520 1541055480 1568048490 1695161028 1724853339 1732578210 1733687415 1823582318 1849266576 1890085320 1916503710 1943496720 2079093852 2090731320 2118951285 2260214704 2299804452 2310104280 2311583220 2508877584 2542741542 2555338280 2598867315 2735373477 2772125136 2773899864 2825268380 2874755565 3066405936 3082110960 3136096980 3390322056 3449706678 3465156420 3467374830 3647164636 3780170640 3814112313 3833007420 4158187704 4181462640 4237902570 4558955795 4599608904 4620208560 4623166440 5085483084 5110676560 5197734630 5470746954 5547799728 5650536760 5749511130 6272193960 6356853855 6780644112 6899413356 6930312840 6934749660 7294329272 7628224626 7666014840 8206120431 8316375408 8475805140 8624266695 9117911590 9199217808 9246332880 10029702749 10170966168 10395469260 10941493908 11301073520 11499022260 12544387920 12713707710 13676867385 13798826712 13860625680 13869499320 14588658544 15256449252 15332029680 16412240862 16951610280 17248533390 18235823180 19070561565 20059405498 20341932336 20790938520 21882987816 22998044520 24618361293 25427415420 27353734770 27597653424 27738998640 30089108247 30512898504 32824481724 33903220560 34497066780 36471646360 38141123130 40118810996 41030602155 41581877040 43765975632 45996089040 49236722586 50148513745 50854830840 54707469540 60178216494 61025797008 65648963448 68994133560 72943292720 76282246260 80237621992 82061204310 90267324741 98473445172 100297027490 101709661680 109414939080 120356432988 123091806465 131297926896 137988267120 150445541235 152564492520 160475243984 164122408620 180534649482 196946890344 200594054980 218829878160 240712865976 246183612930 270801974223 300891082470 305128985040 328244817240 361069298964 393893780688 401188109960 451336623705 481425731952 492367225860 541603948446 601782164940 656489634480 722138597928 802376219920 902673247410 984734451720 1083207896892 1203564329880 1354009871115 1444277195856 1805346494820 1969468903440 2166415793784 2407128659760 2708019742230 3610692989640 4332831587568 5416039484460 7221385979280 10832078968920 21664157937840
• Sum of all divisors σ(n): 83239876592640
• Sum of proper divisors (its aliquot sum) s(n): 61575718654800
• 21664157937840 is an abundant number, because the sum of its proper divisors (61575718654800) is greater than itself. Its abundance is 39911560716960

Bases of 21664157937840

• Binary: 100111011010000010100011100000011000010110000₂
• Hexadecimal: 0x13B4147030B0
• Base-36: 7OGDKA8C0

Squares and roots of 21664157937840

• 21664157937840 squared (21664157937840²) is 469335739155675881303865600
• 21664157937840 cubed (21664157937840³) is 10167763578941439343439377587316514304000
• The square root of 21664157937840 is 4654477.1927510827
• The cube root of 21664157937840 is 27877.0793358743

Scales and comparisons

• 21,664,157,937,840 seconds is equal to 688,853 years, 10 weeks, 6 days, 17 hours, 24 minutes.
• To count from 1 to 21,664,157,937,840 would take you about one million, seven hundred twenty-two thousand, one hundred thirty-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 21664157937840 cubic inches would be around 2323.1 feet tall.

Recreational maths with 21664157937840

• 21664157937840 backwards is 04873975146612
• The number of decimal digits it has is: 14
• The sum of 21664157937840's digits is 63
• More coming soon!