21128680936125

Names of 21128680936125

• Cardinal: 21128680936125 can be written as Twenty-one trillion, one hundred twenty-eight billion, six hundred eighty million, nine hundred thirty-six thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 2.1128680936125 × 10¹³

Factors of 21128680936125

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 623

Divisors of 21128680936125

• Number of divisors d(n): 384
• Complete list of divisors:
  1 3 5 7 9 15 21 25 27 35 45 49 61 63 75 105 125 135 147 175 183 189 225 245 305 315 343 375 427 441 525 547 549 675 735 875 915 945 1029 1125 1225 1281 1323 1525 1575 1641 1647 1715 2135 2205 2625 2735 2745 2989 3087 3375 3675 3829 3843 4575 4725 4923 5145 6125 6405 6615 7625 7875 8205 8235 8575 8967 9261 10675 11025 11487 11529 13675 13725 14769 14945 15435 18375 19145 19215 20923 22875 23625 24615 25725 26803 26901 32025 33075 33367 34461 41025 41175 42875 44835 46305 53375 55125 57435 57645 62769 68375 68625 73845 74725 77175 80409 80703 95725 96075 100101 103383 104615 123075 128625 134015 134505 160125 165375 166835 172305 187621 188307 205125 205875 224175 231525 233569 241227 287175 288225 299209 300303 313845 369225 373625 385875 402045 403515 478625 480375 500505 516915 523075 562863 564921 615375 670075 672525 700707 723681 834175 861525 897627 900909 938105 941535 1120875 1157625 1167845 1206135 1435875 1441125 1496045 1501515 1569225 1634983 1688589 1846125 2010225 2017575 2094463 2102121 2502525 2584575 2615375 2692881 2814315 2824605 3350375 3362625 3503535 3618405 4170875 4307625 4488135 4504545 4690525 4707675 4904949 5065767 5839225 6030675 6283389 6306363 7480225 7507575 7846125 8078643 8174915 8442945 10051125 10087875 10472315 10510605 11444881 12512625 12922875 13464405 14071575 14123025 14661241 14714847 17517675 18092025 18251749 18850167 22440675 22522725 23452625 23538375 24524745 25328835 29196125 30153375 31416945 31531815 34334643 37401125 37537875 40393215 40874575 42214725 43983723 44144541 52361575 52553025 54755247 56550501 57224405 67322025 70357875 70615125 73306205 73574235 87588375 90460125 91258745 94250835 102628687 103003929 112203375 112613625 122623725 126644175 127762243 131951169 157084725 157659075 164265741 171673215 201966075 204372875 211073625 219918615 220722705 261807875 262765125 273776235 282752505 286122025 307886061 309011787 336610125 366531025 367871175 383286729 395853507 456293725 471254175 492797223 513143435 515019645 613118625 633220875 638811215 659755845 785423625 788295375 821328705 858366075 894335701 923658183 1009830375 1099593075 1103613525 1149860187 1368881175 1413762525 1430610125 1539430305 1545058935 1832655125 1839355875 1916433645 1979267535 2281468625 2356270875 2463986115 2565717175 2575098225 2683007103 2770974549 3194056075 3298779225 3449580561 4106643525 4291830375 4471678505 4618290915 5497965375 5518067625 5749300935 6260349907 6844405875 7068812625 7697151525 7725294675 8049021309 9582168225 9896337675 12319930575 12828585875 12875491125 13415035515 13854872745 15970280375 16493896125 17247902805 18781049721 20533217625 22358392525 23091454575 24147063927 28746504675 31301749535 38485757625 38626473375 40245106545 47910841125 49481688375 56343149163 61599652875 67075177575 69274363725 86239514025 93905248605 111791962625 115457272875 120735319635 143732523375 156508747675 169029447489 201225532725 281715745815 335375887875 346371818625 431197570125 469526243025 603676598175 782543738375 845147237445 1006127663625 1408578729075 2347631215125 3018382990875 4225736187225 7042893645375 21128680936125
• Sum of all divisors σ(n): 46387995264000
• Sum of proper divisors (its aliquot sum) s(n): 25259314327875
• 21128680936125 is an abundant number, because the sum of its proper divisors (25259314327875) is greater than itself. Its abundance is 4130633391750

Bases of 21128680936125

• Binary: 100110011011101100111100001011001001010111101₂
• Hexadecimal: 0x1337678592BD
• Base-36: 7HMDR3PH9

Squares and roots of 21128680936125

• 21128680936125 squared (21128680936125²) is 446421158100572006330015625
• 21128680936125 cubed (21128680936125³) is 9432290212642400365602843961310876953125
• The square root of 21128680936125 is 4596594.4933314491
• The cube root of 21128680936125 is 27645.4795820057

Scales and comparisons

• 21,128,680,936,125 seconds is equal to 671,826 years, 36 weeks, 2 days, 5 hours, 48 minutes, 45 seconds.
• To count from 1 to 21,128,680,936,125 would take you about one million, six hundred seventy-nine thousand, five hundred sixty-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 21128680936125 cubic inches would be around 2303.8 feet tall.

Recreational maths with 21128680936125

• 21128680936125 backwards is 52163908682112
• The number of decimal digits it has is: 14
• The sum of 21128680936125's digits is 54
• More coming soon!