155372821461

Names of 155372821461

• Cardinal: 155372821461 can be written as One hundred fifty-five billion, three hundred seventy-two million, eight hundred twenty-one thousand, four hundred sixty-one.

Scientific notation

• Scientific notation: 1.55372821461 × 10¹¹

Factors of 155372821461

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 299

Divisors of 155372821461

• Number of divisors d(n): 384
• Complete list of divisors:
  1 3 9 11 13 17 19 27 33 39 51 57 81 99 109 117 127 143 153 171 187 209 221 243 247 297 323 327 351 381 429 459 513 561 627 663 741 891 969 981 1053 1143 1199 1287 1377 1397 1417 1539 1651 1683 1853 1881 1989 2071 2159 2223 2413 2431 2673 2717 2907 2943 3159 3429 3553 3597 3861 4131 4191 4199 4251 4617 4953 5049 5559 5643 5967 6213 6477 6669 7239 7293 8151 8721 8829 10287 10659 10791 11583 12573 12597 12753 13843 14859 15147 15587 16677 16929 17901 18161 18639 19431 20007 20383 21717 21879 22781 23749 24089 24453 26163 26487 26543 26923 28067 30861 31369 31977 32373 34749 35207 37719 37791 38259 41021 41529 44577 45441 46189 46761 50031 50787 53703 54483 55917 58293 60021 61149 65151 65637 68343 71247 72267 73359 78489 79629 80769 84201 94107 95931 97119 105621 113157 113373 114777 123063 124587 133731 138567 140283 150093 152273 163449 167751 174879 179959 183447 195453 196911 205029 213741 216801 220077 235331 238887 242307 252603 263017 264979 282321 287793 291357 296153 308737 316863 339471 340119 344331 345059 369189 373761 387277 401193 415701 420849 450279 451231 456819 457691 490347 503253 524637 533273 539877 550341 586359 590733 615087 641223 650403 660231 705993 716661 726921 757809 789051 794937 846963 863379 888459 926211 950589 1020357 1035177 1107567 1121283 1161831 1247103 1262547 1353693 1370457 1373073 1471041 1599819 1619631 1651023 1845261 1923669 1951209 1979549 2117979 2149983 2180763 2273427 2367153 2384811 2540889 2588641 2665377 2778633 2851767 2893187 3059303 3105531 3322701 3363849 3419221 3485493 3741309 3787641 4061079 4111371 4119219 4413123 4471289 4799457 4858893 4953069 5034601 5535783 5771007 5853627 5866003 5938647 6353937 6449949 6542289 6820281 7101459 7154433 7622667 7765923 7996131 8335899 8555301 8679561 9177909 9316593 9968103 10257663 10456479 11223927 12183237 12334113 12357657 13413867 14398371 14576679 15103803 17598009 17815941 19061811 21304377 21463299 23297769 23988393 25007697 26038683 27533727 27949779 30772989 31369437 33652333 36549711 37002339 37072971 37611431 40241601 43195113 43730037 45311409 49184179 52794027 53447823 57185433 58126757 63913131 64389897 69893307 71965179 75023091 78116049 82601181 83849337 92318967 94108311 100956999 109649133 111218913 112834293 120724803 129585339 135934227 147552537 158382081 160343469 174380271 209679921 234348147 247803543 276956901 302870997 338502879 362174409 407802681 442657611 475146243 481030407 523140813 629039763 639394327 703044441 743410629 830870703 908612991 1015508637 1086523227 1223408043 1327972833 1425438729 1569422439 1918182981 2725838973 3046525911 3983918499 4708267317 5754548943 8177516919 9139577733 11951755497 14124801951 17263646829 51790940487 155372821461
• Sum of all divisors σ(n): 309967257600
• Sum of proper divisors (its aliquot sum) s(n): 154594436139
• 155372821461 is a deficient number, because the sum of its proper divisors (154594436139) is less than itself. Its deficiency is 778385322

Bases of 155372821461

• Binary: 10010000101100111100010001101111010101₂
• Hexadecimal: 0x242CF11BD5
• Base-36: 1ZDKYSB9

Squares and roots of 155372821461

• 155372821461 squared (155372821461²) is 24140713648751782174521
• 155372821461 cubed (155372821461³) is 3750810791688636517307413676195181
• The square root of 155372821461 is 394173.5930538727
• The cube root of 155372821461 is 5375.9887442839

Scales and comparisons

• 155,372,821,461 seconds is equal to 4,940 years, 19 weeks, 3 days, 13 hours, 4 minutes, 21 seconds.
• To count from 1 to 155,372,821,461 would take you about nine thousand, eight hundred eighty 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 155372821461 cubic inches would be around 448 feet tall.

Recreational maths with 155372821461

• 155372821461 backwards is 164128273551
• The number of decimal digits it has is: 12
• The sum of 155372821461's digits is 45
• More coming soon!