668918199664

Names of 668918199664

• Cardinal: 668918199664 can be written as Six hundred sixty-eight billion, nine hundred eighteen million, one hundred ninety-nine thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 6.68918199664 × 10¹¹

Factors of 668918199664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 72

Divisors of 668918199664

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 4 8 11 13 16 17 22 26 29 34 44 52 58 68 88 104 116 121 136 143 169 176 187 208 221 232 242 272 286 319 338 374 377 442 464 484 493 572 638 676 748 754 841 884 968 986 1144 1276 1331 1352 1496 1508 1573 1682 1768 1859 1936 1972 2057 2197 2288 2431 2552 2662 2704 2873 2992 3016 3146 3364 3509 3536 3718 3944 4114 4147 4394 4862 4901 5104 5324 5423 5746 6032 6292 6409 6728 7018 7436 7888 8228 8294 8788 9251 9724 9802 10648 10846 10933 11492 12584 12818 13456 14036 14297 14872 16456 16588 17303 17576 18502 19448 19604 20449 21296 21692 21866 22627 22984 24167 25168 25636 26741 28072 28594 29744 31603 32912 33176 34606 35152 37004 37349 38599 38896 39208 40898 43384 43732 45254 45617 45968 48334 51272 53482 53911 56144 57188 59653 63206 63713 66352 69212 70499 74008 74698 77198 78416 81796 83317 86768 87464 90508 91234 96668 101761 102544 106964 107822 114376 119306 120263 126412 127426 138424 140998 142129 148016 149396 154396 157267 163592 166634 174928 181016 182468 185861 193336 203522 213928 215644 224939 228752 238612 240526 252824 254852 265837 276848 281996 284258 294151 298792 308792 314534 327184 333268 347633 362032 364936 371722 386672 407044 410839 427856 431288 449878 477224 481052 501787 505648 509704 531674 563992 568516 588302 593021 597584 617584 629068 656183 666536 695266 700843 729872 743444 775489 814088 821678 862576 899756 916487 954448 962104 1003574 1019408 1063348 1083121 1119371 1127984 1137032 1176604 1186042 1258136 1312366 1322893 1333072 1390532 1401686 1486888 1550978 1563419 1628176 1643356 1729937 1799512 1832974 1847677 1924208 2007148 2044471 2126696 2166242 2238742 2274064 2353208 2372084 2416193 2516272 2624732 2645786 2781064 2803372 2924207 2973776 3101956 3126838 3286712 3459874 3599024 3665948 3695354 3823963 4014296 4088942 4253392 4332484 4477484 4519229 4706416 4744168 4832386 5249464 5291572 5562128 5606744 5848414 6203912 6253676 6523231 6573424 6919748 7331896 7390708 7647926 7709273 8028592 8177884 8530379 8664968 8954968 9038458 9488336 9664772 10081357 10498928 10583144 11213488 11696828 11914331 12407824 12507352 13046462 13839496 14551823 14663792 14781416 15295852 15418546 16355768 17060758 17197609 17329936 17909936 18076916 19029307 19329544 20162714 20324447 21166288 22489181 23393656 23828662 25014704 26092924 26578123 27678992 29103646 29562832 30591704 30837092 31410509 32711536 34121516 34395218 36153832 38058614 38659088 40325428 40648894 44978362 46787312 47657324 49711519 52185848 53156246 58207292 61183408 61674184 62821018 68243032 68790436 72307664 76117228 80650856 81297788 84802003 89956724 95314648 99423038 104371696 106312492 110894927 116414584 123348368 125642036 131057641 136486064 137580872 152234456 161301712 162595576 169604006 179913448 189173699 190629296 198846076 212624984 221789854 223568917 232829168 247380991 251284072 262115282 275161744 292359353 304468912 325191152 339208012 345515599 359826896 378347398 397692152 425249968 443579708 447137834 494761982 502568144 524230564 584718706 678416024 691031198 756694796 795384304 887159416 894275668 989523964 1048461128 1169437412 1356832048 1382062396 1441634051 1513389592 1774318832 1788551336 1979047928 2096922256 2338874824 2459258087 2764124792 2883268102 3026779184 3215952883 3577102672 3800671589 3958095856 4677749648 4918516174 5528249584 5766536204 6431905766 7601343178 9837032348 11533072408 12863811532 15202686356 19674064696 23066144816 25727623064 30405372712 39348129392 41807387479 51455246128 60810745424 83614774958 167229549916 334459099832 668918199664
• Sum of all divisors σ(n): 1693442237760
• Sum of proper divisors (its aliquot sum) s(n): 1024524038096
• 668918199664 is an abundant number, because the sum of its proper divisors (1024524038096) is greater than itself. Its abundance is 355605838432

Bases of 668918199664

• Binary: 1001101110111110101000011011010101110000₂
• Hexadecimal: 0x9BBEA1B570
• Base-36: 8JAOMI5S

Squares and roots of 668918199664

• 668918199664 squared (668918199664²) is 447451557841726969712896
• 668918199664 cubed (668918199664³) is 299308490508340166036984647283666944
• The square root of 668918199664 is 817874.1954995279
• The cube root of 668918199664 is 8745.6280729763

Scales and comparisons

• 668,918,199,664 seconds is equal to 21,269 years, 27 weeks, 3 days, 19 hours, 1 minute, 4 seconds.
• To count from 1 to 668,918,199,664 would take you about forty-two thousand, five hundred thirty-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 668918199664 cubic inches would be around 728.8 feet tall.

Recreational maths with 668918199664

• 668918199664 backwards is 466991819866
• The number of decimal digits it has is: 12
• The sum of 668918199664's digits is 73
• More coming soon!