128138878735875

Names of 128138878735875

• Cardinal: 128138878735875 can be written as One hundred twenty-eight trillion, one hundred thirty-eight billion, eight hundred seventy-eight million, seven hundred thirty-five thousand, eight hundred seventy-five.

Scientific notation

• Scientific notation: 1.28138878735875 × 10¹⁴

Factors of 128138878735875

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1767

Divisors of 128138878735875

• Number of divisors d(n): 432
• Complete list of divisors:
  1 3 5 7 9 15 21 25 27 29 35 45 49 63 75 81 87 105 125 135 145 147 175 189 203 225 243 245 261 315 375 405 435 441 525 567 609 675 725 735 783 875 945 1015 1125 1215 1225 1305 1323 1421 1575 1701 1723 1827 2025 2175 2205 2349 2625 2835 3045 3375 3625 3675 3915 3969 4263 4725 5075 5169 5481 6075 6125 6525 6615 7047 7105 7875 8505 8615 9135 10125 10875 11025 11745 11907 12061 12789 14175 15225 15507 16443 18375 19575 19845 21315 23625 25375 25845 27405 30375 32625 33075 35235 35525 36183 38367 42525 43075 45675 46521 49329 49967 55125 58725 59535 60305 63945 70875 76125 77535 82215 84427 97875 99225 106575 108549 115101 129225 137025 139563 149901 165375 176175 177625 180915 191835 212625 215375 228375 232605 246645 249835 253281 293625 297675 301525 319725 325647 345303 349769 387675 411075 418689 422135 449703 496125 532875 542745 575505 646125 685125 697815 749505 759843 880875 904575 959175 976941 1049307 1163025 1233225 1249175 1266405 1349109 1488375 1507625 1598625 1628235 1726515 1748845 1938375 2055375 2093445 2110675 2248515 2279529 2448383 2713725 2877525 2930823 2968729 3147921 3489075 3747525 3799215 4047327 4522875 4795875 4884705 5246535 5815125 6166125 6245875 6332025 6745545 6838587 7345149 8141175 8632575 8744225 8906187 9443763 10467225 10553375 11242575 11397645 12141981 12241915 13568625 14387625 14654115 14843645 15739605 17445375 18737625 18996075 20236635 20515761 20781103 22035447 24423525 26232675 26718561 28331289 31660125 33727725 34192935 36725745 40705875 43162875 43721125 44530935 47218815 52336125 56212875 56988225 60709905 61209575 62343309 66106341 73270575 74218225 78698025 80155683 84993867 86093141 94980375 101183175 102578805 103905515 110177235 122117625 131163375 133592805 141656445 145467721 168638625 170964675 183628725 187029927 198319023 222654675 236094075 240467049 258279423 284941125 303549525 306047875 311716545 330531705 366352875 371091125 393490125 400778415 424969335 430465705 436403163 505915875 512894025 519527575 550886175 561089781 594957069 602651987 667964025 708282225 721401147 727338605 774838269 854823375 918143625 935149635 991595115 1113273375 1180470375 1202335245 1291397115 1309209489 1517747625 1558582725 1652658525 1683269343 1807955961 2003892075 2124846675 2152328525 2182015815 2324514807 2564470125 2597637875 2754430875 2805448905 2974785345 3013259935 3339820125 3541411125 3607005735 3636693025 3874191345 3927628467 4218563909 4675748175 4957975575 5049808029 5423867883 6011676225 6456985575 6546047445 6973544421 7792913625 8263292625 8416346715 9039779805 10019460375 10624233375 10761642625 10910079075 11622574035 11782885401 12655691727 14027244525 14873926725 15066299675 16271603649 18035028675 18183465125 19370956725 19638142335 20920633263 21092819545 23378740875 24789877875 25249040145 27119339415 30058381125 32284927875 32730237225 34867722105 35348656203 37967075181 42081733575 45198899025 48814810947 54550395375 58112870175 58914427005 63278458635 70136222625 74369633625 75331498375 81358018245 90175143375 96854783625 98190711675 104603166315 105464097725 113901225543 126245200725 135596697075 146444432841 163651186125 174338610525 176743281015 189835375905 210408667875 225994495125 244074054735 290564350875 294572135025 316392293175 341703676629 406790091225 490953558375 523015831575 527320488625 569506127715 631226003625 677983485375 732222164205 871693052625 883716405075 949176879525 1025111029887 1220370273675 1472860675125 1581961465875 1708518383145 2033950456125 2615079157875 2847530638575 3661110821025 4418582025375 4745884397625 5125555149435 6101851368375 8542591915725 14237653192875 18305554105125 25627775747175 42712959578625 128138878735875
• Sum of all divisors σ(n): 288432887389920
• Sum of proper divisors (its aliquot sum) s(n): 160294008654045
• 128138878735875 is an abundant number, because the sum of its proper divisors (160294008654045) is greater than itself. Its abundance is 32155129918170

Bases of 128138878735875

• Binary: 11101001000101010101000010110010101011000000011₂
• Hexadecimal: 0x748AA8595603
• Base-36: 19F66RY96R

Squares and roots of 128138878735875

• 128138878735875 squared (128138878735875²) is 16419572243687278238012015625
• 128138878735875 cubed (128138878735875³) is 2103985576628783141116052506103060748046875
• The square root of 128138878735875 is 11319844.4660637897
• The cube root of 128138878735875 is 50415.0620997877

Scales and comparisons

• 128,138,878,735,875 seconds is equal to 4,074,419 years, 51 weeks, 1 day, 6 hours, 11 minutes, 15 seconds.
• To count from 1 to 128,138,878,735,875 would take you about ten million, one hundred eighty-six thousand and forty-nine 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 128138878735875 cubic inches would be around 4201.3 feet tall.

Recreational maths with 128138878735875

• 128138878735875 backwards is 578537878831821
• 128138878735875 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 128138878735875's digits is 81
• More coming soon!