638168248646146842129

Names of 638168248646146842129

• Cardinal: 638168248646146842129 can be written as Six hundred thirty-eight quintillion, one hundred sixty-eight quadrillion, two hundred forty-eight trillion, six hundred forty-six billion, one hundred forty-six million, eight hundred forty-two thousand, one hundred twenty-nine.

Scientific notation

• Scientific notation: 6.38168248646146842129 × 10²⁰

Factors of 638168248646146842129

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 468

Divisors of 638168248646146842129

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 9 11 33 99 107 121 321 347 363 963 1041 1089 1177 3123 3531 3817 10593 11449 11451 12947 34347 34353 37129 38841 41987 103041 111387 116523 120409 125939 125961 334161 361227 377817 377883 408419 1083681 1133451 1225043 1225257 1324499 1385329 3675129 3675771 3972803 3973497 4155987 4492609 11025387 11918409 11920491 12467961 12883763 13475473 13477827 14569489 35755227 38651289 40426419 40433481 41781923 43700833 43708467 115953867 121279257 125345769 131079601 131102499 131125401 141721393 148230203 376037307 393238803 393307497 425089921 425164179 444690609 459601153 480709163 1179716409 1275269763 1275492537 1334071827 1378562641 1378803459 1441875611 1442127489 1558935323 3825809289 4135687923 4136410377 4325626833 4326382467 4470665761 4675989131 4676805969 5055612683 12407063769 12976880499 13411997283 14025517307 14027967393 14030417907 15164189051 15166838049 15860631721 40235991849 42076551921 42083902179 45484621547 45492567153 45500514147 47581895163 49177323371 51435880441 126229655763 136453864641 136477701459 142745685489 147506202587 147531970113 154280690377 154307641323 166806079561 409361593923 442518607761 442595910339 462842071131 462922923969 478361236427 500330837017 500418238683 540950557081 1327555823283 1388526213393 1435083709281 1500992511051 1501254716049 1622568228457 1622851671243 1697087594147 4305251127843 4502977533153 4866854505529 4867704685371 4868555013729 5091262782441 5261973600697 5503639207187 14600563516587 14603114056113 15273788347323 15783163676809 15785920802091 16510917621561 17848250513027 43801690549761 47349491030427 47357762406273 49532752864683 51184652297689 53535399560819 53544751539081 57881709607667 142048473091281 153553956893067 160606198682457 160634254617243 173614800444899 173645128823001 460661870679201 481818596047371 520844401334697 520935386469003 563031175274579 588889395169009 1562533204004091 1688798513418563 1689093525823737 1766668185507027 1909762804893889 5066395540255689 5067280577471211 5300004556521081 5476757795852723 5729288414681667 6193342928020369 15199186620767067 16430273387558169 17187865244045001 18576783647604193 18580028784061107 49290820162674507 55730350942812579 55740086352183321 60244335754379953 167191052828437737 180733007263139859 204344620123646123 542199021789419577 586013084156241361 613033860370938369 662687693298179483 1758039252468724083 1839101581112815107 1988063079894538449 5274117757406172249 5964189239683615347 6446143925718654971 19338431777155964913 58015295331467894739 70907583182905204681 212722749548715614043 638168248646146842129
• Sum of all divisors σ(n): 1025731267706693489760
• Sum of proper divisors (its aliquot sum) s(n): 387563019060546647631
• 638168248646146842129 is a deficient number, because the sum of its proper divisors (387563019060546647631) is less than itself. Its deficiency is 250605229585600194498

Bases of 638168248646146842129

• Binary: 1000101001100001011101000100001111101110111110101111011101111000010001₂
• Hexadecimal: 0x22985D10FBBEBDDE11
• Base-36: 3QOI440JLBPPU9

Squares and roots of 638168248646146842129

• 638168248646146842129 squared (638168248646146842129²) is 407258713580090300801898781577278849252641
• 638168248646146842129 cubed (638168248646146842129³) is 259899579991288966653834976502315333958265466564425013863312689
• The square root of 638168248646146842129 is 25261992174.9284619267
• The cube root of 638168248646146842129 is 8609509.2608364311

Scales and comparisons

• 638,168,248,646,146,842,129 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 638,168,248,646,146,842,129 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and 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 638168248646146842129 cubic inches would be around 717459.1 feet tall.

Recreational maths with 638168248646146842129

• 638168248646146842129 backwards is 921248641646842861836
• 638168248646146842129 is a Harshad number.
• The number of decimal digits it has is: 21
• The sum of 638168248646146842129's digits is 99
• More coming soon!