80905729905

Names of 80905729905

• Cardinal: 80905729905 can be written as Eighty billion, nine hundred five million, seven hundred twenty-nine thousand, nine hundred five.

Scientific notation

• Scientific notation: 8.0905729905 × 10¹⁰

Factors of 80905729905

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 159

Divisors of 80905729905

• Number of divisors d(n): 576
• Complete list of divisors:
  1 3 5 7 9 11 13 15 21 27 31 33 35 39 45 49 55 63 65 77 89 91 93 99 105 117 135 143 147 155 165 189 195 217 231 245 267 273 279 297 315 341 351 385 403 429 441 445 455 465 495 539 585 623 637 651 693 715 735 801 819 837 945 961 979 1001 1023 1085 1155 1157 1209 1287 1323 1335 1365 1395 1485 1519 1617 1705 1755 1869 1911 1953 2015 2079 2145 2205 2387 2403 2457 2695 2759 2821 2883 2937 3003 3069 3115 3185 3255 3465 3471 3627 3861 4005 4095 4185 4361 4433 4557 4805 4851 4895 5005 5115 5607 5733 5785 5859 6045 6435 6615 6727 6853 7007 7161 7595 8085 8099 8277 8463 8649 8811 9009 9207 9345 9555 9765 10395 10413 10571 10881 11935 12015 12285 12493 12727 13083 13299 13671 13795 14105 14415 14553 14685 15015 15345 16709 16821 17199 17355 18135 19305 19313 19747 20181 20559 21021 21483 21805 22165 22785 24255 24297 24831 25389 25947 26433 27027 28035 28665 29295 30349 31031 31239 31713 33635 34265 35035 35805 35867 37479 38181 39249 39897 40495 41013 41385 42315 43245 44055 45045 46035 47089 47971 50127 52065 52855 54405 56693 57939 59241 60543 61677 62465 63063 63635 64449 65415 66495 68355 72765 72891 73997 74493 76167 83545 84105 85529 85995 87451 89089 91047 93093 95139 96565 98735 100905 102795 105105 107415 107601 112437 114543 117747 119691 121485 124155 126945 129735 132165 135135 135191 137423 141267 143913 150381 151745 155155 156195 158565 170079 173817 177723 179335 181629 185031 187395 189189 190905 196245 199485 205065 212443 217217 218673 221991 235445 239855 250635 251069 256587 262353 267267 273141 279279 283465 285417 289695 296205 302715 308385 315315 322245 322803 337311 343629 364455 369985 372465 380835 394537 405573 412269 423801 427645 431739 437255 445445 451143 455235 465465 475695 510237 517979 521451 533169 538005 562185 572715 588735 598455 598703 612157 623623 637329 651651 665973 675955 687115 706335 719565 751905 753207 769761 787059 801801 819423 837837 850395 869085 888615 908145 925155 940819 945945 961961 968409 1062215 1086085 1093365 1109955 1111877 1183611 1216719 1236807 1255345 1271403 1282935 1295217 1311765 1336335 1365705 1396395 1427085 1487101 1530711 1553937 1614015 1686555 1718145 1757483 1796109 1836471 1870869 1911987 1954953 1972685 1997919 2027865 2061345 2119005 2158695 2255715 2259621 2309283 2361177 2405403 2551185 2589895 2607255 2665845 2761759 2822457 2885883 2993515 3060785 3118115 3186645 3258255 3329865 3335631 3550833 3650157 3710421 3766035 3848805 3935295 4009005 4097115 4189185 4190921 4461303 4661811 4704095 4809805 4842045 5272449 5388327 5509413 5559385 5612607 5735961 5864859 5918055 6083595 6184035 6357015 6476085 6585733 6733727 6778863 7435505 7653555 7769685 7783139 8285277 8467371 8657649 8787415 8980545 9182355 9354345 9559935 9774765 9989595 10006893 10652499 11298105 11546415 11805885 12027015 12230647 12572763 13383909 13808795 13985433 14112285 14429415 15817347 16164981 16528239 16678155 16837821 17754165 18250785 18552105 19332313 19757199 20201181 20954605 22306515 23309055 23349417 24855831 25402113 25972947 26362245 26941635 27547065 28063035 28679805 29324295 30020679 32928665 33668635 33894315 36691941 37718289 38915695 40151727 41426385 42336855 43288245 46100131 47452041 50034465 53262495 54481973 57996939 59271597 60603543 61153235 62863815 66919545 69927165 70048251 74567493 79086735 80824905 82641195 84189105 85614529 96661565 98785995 101005905 110075823 113154867 116747085 124279155 127010565 129864735 138300393 150103395 163445919 173990817 177814791 181810629 183459705 188591445 200758635 210144753 230500655 237260205 256843587 272409865 289984695 296357985 303017715 330227469 350241255 372837465 414901179 428072645 490337757 521972451 550379115 565774335 599301703 691501965 770530761 817229595 869954085 889073955 909053145 1050723765 1244703537 1284217935 1471013271 1651137345 1797905109 2074505895 2311592283 2451688785 2609862255 2996508515 3852653805 5393715327 6223517685 7355066355 8989525545 11557961415 16181145981 26968576635 80905729905
• Sum of all divisors σ(n): 205393708800
• Sum of proper divisors (its aliquot sum) s(n): 124487978895
• 80905729905 is an abundant number, because the sum of its proper divisors (124487978895) is greater than itself. Its abundance is 43582248990

Bases of 80905729905

• Binary: 1001011010110010110110111011101110001₂
• Hexadecimal: 0x12D65B7771
• Base-36: 11616KQ9

Squares and roots of 80905729905

• 80905729905 squared (80905729905²) is 6545737131460811309025
• 80905729905 cubed (80905729905³) is 529587640387097877860146138892625
• The square root of 80905729905 is 284439.3255247945
• The cube root of 80905729905 is 4325.0695284133

Scales and comparisons

• 80,905,729,905 seconds is equal to 2,572 years, 28 weeks, 4 days, 21 hours, 51 minutes, 45 seconds.
• To count from 1 to 80,905,729,905 would take you about five thousand, one hundred forty-five 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 80905729905 cubic inches would be around 360.4 feet tall.

Recreational maths with 80905729905

• 80905729905 backwards is 50992750908
• The number of decimal digits it has is: 11
• The sum of 80905729905's digits is 54
• More coming soon!