668212638720

Names of 668212638720

• Cardinal: 668212638720 can be written as Six hundred sixty-eight billion, two hundred twelve million, six hundred thirty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.6821263872 × 10¹¹

Factors of 668212638720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 39279

Divisors of 668212638720

• Number of divisors d(n): 352
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 64 66 80 88 96 101 110 120 128 132 160 165 176 192 202 220 240 256 264 303 320 330 352 384 404 440 480 505 512 528 606 640 660 704 768 808 880 960 1010 1024 1056 1111 1212 1280 1320 1408 1515 1536 1616 1760 1920 2020 2112 2222 2424 2560 2640 2816 3030 3072 3232 3333 3520 3840 4040 4224 4444 4848 5120 5280 5555 5632 6060 6464 6666 7040 7680 8080 8448 8888 9696 10560 11110 11264 12120 12928 13332 14080 15360 16160 16665 16896 17776 19392 21120 22220 24240 25856 26664 28160 32320 33330 33792 35552 38784 39157 42240 44440 48480 51712 53328 56320 64640 66660 71104 77568 78314 84480 88880 96960 103424 106656 117471 129280 133320 142208 155136 156628 168960 177760 193920 195785 213312 234942 258560 266640 284416 310272 313256 355520 387840 391570 426624 430727 469884 517120 533280 568832 587355 626512 711040 775680 783140 853248 861454 939768 1066560 1137664 1174710 1253024 1292181 1422080 1551360 1566280 1706496 1722908 1879536 2133120 2153635 2349420 2506048 2584362 2844160 3132560 3412992 3445816 3759072 3954857 4266240 4307270 4698840 5012096 5168724 5688320 6265120 6460905 6891632 7518144 7909714 8532480 8614540 9397680 10024192 10337448 11864571 12530240 12921810 13783264 15036288 15819428 17064960 17229080 18795360 19774285 20048384 20674896 23729142 25060480 25843620 27566528 30072576 31638856 34458160 37590720 39548570 40096768 41349792 43503427 47458284 50120960 51687240 55133056 59322855 60145152 63277712 68916320 75181440 79097140 82699584 87006854 94916568 100241920 103374480 110266112 118645710 120290304 126555424 130510281 137832640 150362880 158194280 165399168 174013708 189833136 200483840 206748960 217517135 220532224 237291420 253110848 261020562 275665280 300725760 316388560 330798336 348027416 379666272 413497920 435034270 441064448 474582840 506221696 522041124 551330560 601451520 632777120 652551405 661596672 696054832 759332544 826995840 870068540 949165680 1012443392 1044082248 1102661120 1265554240 1305102810 1323193344 1392109664 1518665088 1653991680 1740137080 1898331360 2024886784 2088164496 2205322240 2531108480 2610205620 2784219328 3037330176 3307983360 3480274160 3796662720 4049773568 4176328992 5062216960 5220411240 5568438656 6074660352 6615966720 6960548320 7593325440 8352657984 10124433920 10440822480 11136877312 12149320704 13921096640 15186650880 16705315968 20248867840 20881644960 22273754624 27842193280 30373301760 33410631936 41763289920 44547509248 55684386560 60746603520 66821263872 83526579840 111368773120 133642527744 167053159680 222737546240 334106319360 668212638720
• Sum of all divisors σ(n): 2354675170176
• Sum of proper divisors (its aliquot sum) s(n): 1686462531456
• 668212638720 is an abundant number, because the sum of its proper divisors (1686462531456) is greater than itself. Its abundance is 1018249892736

Bases of 668212638720

• Binary: 1001101110010100100100111011010000000000₂
• Hexadecimal: 0x9B9493B400
• Base-36: 8IZ0JVUO

Squares and roots of 668212638720

• 668212638720 squared (668212638720²) is 446508130545145243238400
• 668212638720 cubed (668212638720³) is 298362376121505735069987502030848000
• The square root of 668212638720 is 817442.7433894069
• The cube root of 668212638720 is 8742.5520892935

Scales and comparisons

• 668,212,638,720 seconds is equal to 21,247 years, 4 weeks, 6 days, 13 hours, 52 minutes.
• To count from 1 to 668,212,638,720 would take you about forty-two thousand, four hundred ninety-four 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 668212638720 cubic inches would be around 728.5 feet tall.

Recreational maths with 668212638720

• 668212638720 backwards is 027836212866
• The number of decimal digits it has is: 12
• The sum of 668212638720's digits is 51
• More coming soon!