20649485490921

Names of 20649485490921

• Cardinal: 20649485490921 can be written as Twenty trillion, six hundred forty-nine billion, four hundred eighty-five million, four hundred ninety thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 2.0649485490921 × 10¹³

Factors of 20649485490921

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 221

Divisors of 20649485490921

• Number of divisors d(n): 336
• Complete list of divisors:
  1 3 7 9 17 21 27 31 51 63 81 93 119 153 163 189 217 243 279 289 357 459 489 527 567 651 729 837 867 1071 1141 1377 1467 1581 1701 1953 2023 2511 2601 2771 3213 3423 3689 4131 4401 4743 4913 5053 5103 5859 6069 7533 7803 8313 8959 9639 10269 11067 12393 13203 14229 14739 15159 17577 18207 19397 22599 23409 24939 26569 26877 28917 30807 33201 34391 35371 39609 42687 44217 45477 47107 52731 54621 58191 62713 70227 74817 79707 80631 85901 86751 92421 99603 103173 106113 118827 128061 132651 136431 141321 152303 158193 163863 174573 185983 188139 210681 224451 239121 241893 257703 277263 298809 309519 318339 329749 384183 397953 409293 423963 451673 456909 491589 523719 557949 564417 601307 673353 717363 725679 773109 800819 823639 831789 896427 928557 955017 989247 1066121 1193859 1227879 1271889 1355019 1370727 1460317 1474767 1571157 1673847 1693251 1803921 2020059 2152089 2177037 2319327 2402457 2470917 2689281 2785671 2865051 2967741 3161711 3198363 3581577 3683637 3815667 4065057 4112181 4380951 4713471 5021541 5079753 5411763 5605733 5765473 6456267 6531111 6957981 7207371 7412751 7678441 8357013 8595153 8903223 9485133 9595089 10222219 11447001 12195171 12336543 13142853 14001863 14140413 15064623 15239259 16235289 16817199 17296419 19368801 20873943 21622113 22238253 23035323 24825389 25071039 25785459 26709669 28455399 28785267 30666657 34341003 36585513 37009629 39428559 42005589 45193869 45717777 48705867 50451597 51889257 53749087 62621829 64866339 66714759 69105969 74476167 80129007 85366197 86355801 91999971 98013041 109756539 111028887 118285677 126016767 130533497 135581607 146117601 151354791 155667771 161247261 173777723 194599017 200144277 207317907 223428501 238031671 240387021 256098591 259067403 275999913 294039123 329269617 354857031 378050301 391600491 438352803 454064373 467003313 483741783 521333169 583797051 600432831 621953721 670285503 714095013 768295773 777202209 827999739 882117369 913734479 1064571093 1134150903 1174801473 1362193119 1401009939 1451225349 1563999507 1666221697 1865861163 2010856509 2142285039 2304887319 2483999217 2646352107 2741203437 3402452709 3524404419 4046538407 4086579357 4203029817 4353676047 4691998521 4998665091 5597583489 6032569527 6426855117 7451997651 7939056321 8223610311 10207358127 10573213257 12139615221 13061028141 14075995563 14995995273 18097708581 19280565351 23817168963 24670830933 28325768849 31719639771 36418845663 39183084423 42227986689 44987985819 57841696053 71451506889 74012492799 84977306547 95158919313 109256536989 126683960067 134963957457 173525088159 222037478397 254931919641 327769610967 404891872371 666112435191 764795758923 983308832901 1214675617113 2294387276769 2949926498703 6883161830307 20649485490921
• Sum of all divisors σ(n): 39046159918080
• Sum of proper divisors (its aliquot sum) s(n): 18396674427159
• 20649485490921 is a deficient number, because the sum of its proper divisors (18396674427159) is less than itself. Its deficiency is 2252811063762

Bases of 20649485490921

• Binary: 100101100011111010101001111110101101011101001₂
• Hexadecimal: 0x12C7D53F5AE9
• Base-36: 7BI8QI9K9

Squares and roots of 20649485490921

• 20649485490921 squared (20649485490921²) is 426401251039756892373428241
• 20649485490921 cubed (20649485490921³) is 8804966446656022914400214221961650499961
• The square root of 20649485490921 is 4544170.4953622723
• The cube root of 20649485490921 is 27434.8808487009

Scales and comparisons

• 20,649,485,490,921 seconds is equal to 656,589 years, 39 weeks, 5 days, 15 hours, 55 minutes, 21 seconds.
• To count from 1 to 20,649,485,490,921 would take you about one million, six hundred forty-one thousand, four hundred seventy-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 20649485490921 cubic inches would be around 2286.2 feet tall.

Recreational maths with 20649485490921

• 20649485490921 backwards is 12909458494602
• 20649485490921 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 20649485490921's digits is 63
• More coming soon!