81313002225

Names of 81313002225

• Cardinal: 81313002225 can be written as Eighty-one billion, three hundred thirteen million, two thousand, two hundred twenty-five.

Scientific notation

• Scientific notation: 8.1313002225 × 10¹⁰

Factors of 81313002225

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 401

Divisors of 81313002225

• Number of divisors d(n): 360
• Complete list of divisors:
  1 3 5 7 9 13 15 21 25 27 35 39 45 49 63 65 75 81 91 105 117 135 147 169 175 189 195 225 245 273 315 325 351 373 405 441 455 507 525 567 585 637 675 735 819 845 945 975 1053 1119 1183 1225 1323 1365 1521 1575 1755 1865 1911 2025 2197 2205 2275 2457 2535 2611 2835 2925 3185 3357 3549 3675 3969 4095 4225 4563 4725 4849 5265 5595 5733 5915 6591 6615 6825 7371 7605 7833 8281 8775 9325 9555 10071 10647 10985 11025 12285 12675 13055 13689 14175 14547 15379 15925 16785 17199 17745 18277 19773 19845 20475 22815 23499 24245 24843 26325 27975 28665 29575 30213 31941 32955 33075 33943 36855 38025 39165 41405 43641 46137 47775 50355 51597 53235 54831 54925 59319 61425 63037 65275 68445 70497 72735 74529 76895 83925 85995 88725 91385 95823 98865 99225 101829 107653 114075 117495 121225 124215 130923 138411 143325 151065 159705 164493 164775 169715 177957 184275 189111 195825 207025 211491 218205 223587 230685 237601 251775 257985 266175 274155 296595 305487 315185 322959 342225 352485 363675 372645 384475 392769 415233 429975 441259 456925 479115 493479 494325 509145 538265 567333 587475 621075 654615 670761 692055 712803 755325 798525 819481 822465 848575 889785 916461 945555 968877 1057455 1091025 1117935 1153425 1188005 1245699 1289925 1323777 1370775 1480437 1482975 1527435 1575925 1614795 1701999 1762425 1863225 1963845 2076165 2138409 2206295 2395575 2458443 2467395 2545725 2691325 2749383 2836665 2906631 3088813 3273075 3353805 3460275 3564015 3971331 4097405 4112325 4448925 4582305 4727775 4844385 5105997 5287275 5589675 5736367 5940025 6228495 6415227 6618885 7375329 7402185 7637175 8073975 8509995 8719893 9266439 9819225 10380825 10692045 11031475 11913993 12292215 12336975 13746915 14183325 14533155 15444065 16769025 17209101 17820075 19245681 19856655 20487025 22125987 22911525 24221925 25529985 27799317 28681835 31142475 32076135 33094425 35741979 36876645 37010925 40154569 42549975 43599465 46332195 51627303 53460225 59569965 61461075 66377961 68734575 72665775 77220325 83397951 86045505 96228405 99283275 110629935 120463707 127649925 138996585 143409175 154881909 160380675 178709895 184383225 200772845 217997325 231660975 250193853 258136515 297849825 331889805 361391121 416989755 430227525 464645727 481142025 553149675 602318535 694982925 774409545 893549475 1003864225 1084173363 1250969265 1290682575 1659449025 1806955605 2084948775 2323228635 3011592675 3252520089 3872047725 5420866815 6254846325 9034778025 11616143175 16262600445 27104334075 81313002225
• Sum of all divisors σ(n): 190313886840
• Sum of proper divisors (its aliquot sum) s(n): 109000884615
• 81313002225 is an abundant number, because the sum of its proper divisors (109000884615) is greater than itself. Its abundance is 27687882390

Bases of 81313002225

• Binary: 1001011101110101000011111001011110001₂
• Hexadecimal: 0x12EEA1F2F1
• Base-36: 11CRNU29

Squares and roots of 81313002225

• 81313002225 squared (81313002225²) is 6611804330842854950625
• 81313002225 cubed (81313002225³) is 537625660265089700725522890140625
• The square root of 81313002225 is 285154.3480731093
• The cube root of 81313002225 is 4332.3147244699

Scales and comparisons

• 81,313,002,225 seconds is equal to 2,585 years, 26 weeks, 17 hours, 3 minutes, 45 seconds.
• To count from 1 to 81,313,002,225 would take you about five thousand, one hundred seventy-one 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 81313002225 cubic inches would be around 361 feet tall.

Recreational maths with 81313002225

• 81313002225 backwards is 52220031318
• 81313002225 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81313002225's digits is 27
• More coming soon!