990942162472021221

Names of 990942162472021221

• Cardinal: 990942162472021221 can be written as Nine hundred ninety quadrillion, nine hundred forty-two trillion, one hundred sixty-two billion, four hundred seventy-two million, twenty-one thousand, two hundred twenty-one.

Scientific notation

• Scientific notation: 9.90942162472021221 × 10¹⁷

Factors of 990942162472021221

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 79413

Divisors of 990942162472021221

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 7 9 11 21 27 33 63 77 83 99 121 189 231 249 297 363 581 693 747 847 913 1089 1743 2079 2241 2541 2739 3267 5229 6391 6889 7623 8217 10043 15687 19173 20667 22869 24651 30129 48223 57519 62001 70301 75779 79309 90387 144669 172557 186003 210903 227337 237927 271161 434007 530453 555163 632709 682011 713781 833569 872399 1302021 1591359 1665489 1898127 2046033 2141343 2500707 2617197 4774077 4996467 5834983 6106793 6582647 7502121 7851591 9596389 14322231 14989401 17504949 18320379 19747941 22506363 23554773 28789167 46078529 52514847 54961137 59243823 67174723 72409117 86367501 138235587 157544541 164883411 177731469 201524169 217227351 259102503 414706761 506863819 546359701 604572507 651682053 796500287 1244120283 1520591457 1639079103 1813717521 1955046159 2389500861 3824517907 4561774371 4917237309 5575502009 6009956711 6289917481 7168502583 11473553721 13685323113 14751711927 16726506027 18029870133 18869752443 21505507749 34420661163 42069696977 44029422367 50179518081 54089610399 56609257329 66109523821 69189092291 103261983489 126209090931 132088267101 150538554243 162268831197 169827771987 198328571463 207567276873 378627272793 396264801303 462766666747 484323646037 522063150923 594985714389 622701830619 761080015201 1135881818379 1188794403909 1388300000241 1452970938111 1566189452769 1784957143167 1868105491857 2283240045603 3654442056461 4164900000723 4358912814333 4698568358307 5327560106407 5742694660153 6849720136809 10963326169383 12494700002169 13076738442999 14095705074921 15982680319221 17228083980459 20549160410427 32889978508149 40198862621071 43331241526609 47948040957663 51684251941377 63169641261683 98669935524447 120596587863213 129993724579827 143844122872989 155052755824131 189508923785049 303318690686263 361789763589639 389981173739481 442187488831781 476643656792699 568526771355147 909956072058789 1085369290768917 1169943521218443 1326562466495343 1429930970378097 1705580314065441 2729868216176367 3336505597548893 3979687399486029 4289792911134291 5243080224719689 8189604648529101 10009516792646679 11939062198458087 12869378733402873 15729240674159067 30028550377940037 36701561573037823 47187722022477201 90085651133820111 110104684719113469 141563166067431603 330314054157340407 990942162472021221
• Sum of all divisors σ(n): 1866687882862246080
• Sum of proper divisors (its aliquot sum) s(n): 875745720390224859
• 990942162472021221 is a deficient number, because the sum of its proper divisors (875745720390224859) is less than itself. Its deficiency is 115196442081796362

Bases of 990942162472021221

• Binary: 110111000000100010001010010110000011000110100010110011100101₂
• Hexadecimal: 0xDC088A5831A2CE5
• Base-36: 7J17OGVREIN9

Squares and roots of 990942162472021221

• 990942162472021221 squared (990942162472021221²) is 981966369364725702718043637074330841
• 990942162472021221 cubed (990942162472021221³) is 973071877533080819036862258659834734586924753326776861
• The square root of 990942162472021221 is 995460778.9722411867
• The cube root of 990942162472021221 is 996971.5586252537

Scales and comparisons

• 990,942,162,472,021,221 seconds is equal to 31,508,895,581 years, 12 weeks, 6 days, 7 hours, 40 minutes, 21 seconds.
• To count from 1 to 990,942,162,472,021,221 would take you about ninety-four billion, five hundred twenty-six million, six hundred eighty-six thousand, seven hundred forty-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 990942162472021221 cubic inches would be around 83081 feet tall.

Recreational maths with 990942162472021221

• 990942162472021221 backwards is 122120274261249099
• 990942162472021221 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 990942162472021221's digits is 63
• More coming soon!