820542104864078121

Names of 820542104864078121

• Cardinal: 820542104864078121 can be written as Eight hundred twenty quadrillion, five hundred forty-two trillion, one hundred four billion, eight hundred sixty-four million, seventy-eight thousand, one hundred twenty-one.

Scientific notation

• Scientific notation: 8.20542104864078121 × 10¹⁷

Factors of 820542104864078121

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 553487

Divisors of 820542104864078121

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 7 9 21 23 43 63 69 129 161 207 301 387 483 903 989 1449 1849 2709 2967 5547 6923 8901 12943 16641 20769 38829 42527 62307 116487 127581 297689 382743 553411 893067 1660233 2679201 3873877 4980699 11621631 12728453 23796673 34864893 38185359 71390019 89099171 114556077 166576711 214170057 267297513 499730133 547323479 801892539 1023256939 1499190399 1641970437 3069770817 3831264353 4925911311 7162798573 9209312451 11493793059 21488395719 23534909597 34481379177 64465187157 70604728791 164744367179 211814186373 306263734921 494233101537 918791204763 1482699304611 2143846144447 2756373614289 6431538433341 7044065903183 13169340601603 19294615300023 21132197709549 39508021804809 49308461322281 63396593128647 92185384211221 118524065414427 147925383966843 276556152633663 302894833836869 443776151900529 566281645868929 829668457900989 908684501510607 1698844937606787 2120263836858083 2726053504531821 3963971521082503 5096534812820361 6360791510574249 11891914563247509 13024477854985367 19082374531722747 35675743689742527 39073433564956101 91171344984897569 117220300694868303 273514034954692707 820542104864078121
• Sum of all divisors σ(n): 1447076711344665024
• Sum of proper divisors (its aliquot sum) s(n): 626534606480586903
• 820542104864078121 is a deficient number, because the sum of its proper divisors (626534606480586903) is less than itself. Its deficiency is 194007498383491218

Bases of 820542104864078121

• Binary: 101101100011001001101011001001101011101011001011100100101001₂
• Hexadecimal: 0xB6326B26BACB929
• Base-36: 68FDWF3EQRS9

Squares and roots of 820542104864078121

• 820542104864078121 squared (820542104864078121²) is 673289345854771775598044167190890641
• 820542104864078121 cubed (820542104864078121³) is 552462257030232704044545353974332831461363297391765561
• The square root of 820542104864078121 is 905837791.6956645285
• The cube root of 820542104864078121 is 936196.3789991035

Scales and comparisons

• 820,542,104,864,078,121 seconds is equal to 26,090,700,831 years, 15 weeks, 4 days, 11 hours, 55 minutes, 21 seconds.
• To count from 1 to 820,542,104,864,078,121 would take you about seventy-eight billion, two hundred seventy-two million, one hundred two thousand, four hundred ninety-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 820542104864078121 cubic inches would be around 78016.4 feet tall.

Recreational maths with 820542104864078121

• 820542104864078121 backwards is 121870468401245028
• 820542104864078121 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 820542104864078121's digits is 63
• More coming soon!