5138721665

Names of 5138721665

• Cardinal: 5138721665 can be written as Five billion, one hundred thirty-eight million, seven hundred twenty-one thousand, six hundred sixty-five.

Scientific notation

• Scientific notation: 5.138721665 × 10⁹

Factors of 5138721665

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 133

Divisors of 5138721665

• Number of divisors d(n): 192
• Complete list of divisors:
  1 5 7 11 17 19 31 35 43 55 77 85 95 119 133 155 187 209 215 217 301 323 341 385 473 527 589 595 665 731 817 935 961 1045 1085 1309 1333 1463 1505 1615 1705 2261 2365 2387 2635 2945 3311 3553 3655 3689 4085 4123 4805 5117 5719 5797 6479 6545 6665 6727 7315 8041 8987 9331 10013 10571 11305 11935 13889 14663 16337 16555 17765 18259 18445 20615 22661 24871 25327 25585 28595 28985 32395 33635 40205 40579 41323 44935 45353 46655 50065 52855 56287 62909 69445 70091 73315 73997 81685 91295 97223 102641 110143 113305 114359 124355 126635 127813 152779 158627 177289 179707 200849 202895 206615 226765 249271 278597 281435 289261 310403 314545 350455 369985 430559 454553 486115 513205 550715 571795 639065 702491 763895 771001 785137 793135 886445 898535 1004245 1069453 1246355 1257949 1392985 1405943 1446305 1552015 1744897 1950179 2152795 2172821 2272765 3013913 3181871 3414433 3512455 3855005 3925685 4736149 4917437 5347265 5495959 6289745 7029715 7727401 8636507 8724485 9750895 10864105 13347329 15069565 15909355 17072165 23680745 23901031 24587185 27479795 33153043 38637005 43182535 54091807 60455549 66736645 93431303 119505155 146820619 165765215 270459035 302277745 467156515 734103095 1027744333 5138721665
• Sum of all divisors σ(n): 9059973120
• Sum of proper divisors (its aliquot sum) s(n): 3921251455
• 5138721665 is a deficient number, because the sum of its proper divisors (3921251455) is less than itself. Its deficiency is 1217470210

Bases of 5138721665

• Binary: 100110010010010101010101110000001₂
• Hexadecimal: 0x1324AAB81
• Base-36: 2CZGN0H

Squares and roots of 5138721665

• 5138721665 squared (5138721665²) is 26406460350340372225
• 5138721665 cubed (5138721665³) is 135695449898257560876771754625
• The square root of 5138721665 is 71684.8775195997
• The cube root of 5138721665 is 1725.6459573373

Scales and comparisons

• 5,138,721,665 seconds is equal to 163 years, 20 weeks, 3 days, 22 hours, 41 minutes, 5 seconds.
• To count from 1 to 5,138,721,665 would take you about three hundred twenty-six 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 5138721665 cubic inches would be around 143.8 feet tall.

Recreational maths with 5138721665

• 5138721665 backwards is 5661278315
• The number of decimal digits it has is: 10
• The sum of 5138721665's digits is 44
• More coming soon!