21180421328157

Names of 21180421328157

• Cardinal: 21180421328157 can be written as Twenty-one trillion, one hundred eighty billion, four hundred twenty-one million, three hundred twenty-eight thousand, one hundred fifty-seven.

Scientific notation

• Scientific notation: 2.1180421328157 × 10¹³

Factors of 21180421328157

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 497

Divisors of 21180421328157

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 7 9 13 21 27 39 49 63 91 117 147 169 189 233 241 273 343 351 441 507 637 699 723 819 1029 1183 1323 1521 1631 1687 1911 2097 2169 2457 3029 3087 3133 3549 4459 4563 4893 5061 5733 6291 6507 8281 9087 9261 9399 10647 11417 11809 13377 14679 15183 17199 21203 21931 24843 27261 28197 31941 34251 35427 39377 40131 40729 44037 45549 56153 57967 58081 63609 65793 74529 79919 81783 82663 84591 102753 106281 118131 120393 122187 148421 153517 168459 173901 174243 190827 197379 223587 239757 247989 275639 285103 308259 318843 354393 366561 393071 406567 445263 460551 505377 521703 522729 572481 592137 719271 729989 743967 755053 826917 855309 1038947 1063179 1074619 1099683 1179213 1219701 1335789 1381653 1516131 1565109 1568187 1929473 1995721 2157813 2189967 2231901 2265159 2480751 2565927 2751497 2845969 3116841 3223857 3537639 3659103 4007367 4144959 5109923 5285371 5788419 5987163 6569901 6795477 7442253 7697781 8254491 8537907 9350523 9489857 9671571 9815689 10612917 10977309 13506311 13532873 13970047 15329769 15856113 17365257 17961489 19260479 19709703 19921783 20386431 24763473 25613721 28051569 28469571 29014713 29447067 35769461 36997597 40518933 40598619 41910141 45989307 47568339 52095771 53884467 57781437 59765349 66428999 68709823 74290419 76841163 85408713 88341201 94730111 107308383 110992791 121556799 121795857 125730423 137967921 142705017 173344311 175927349 179296047 199286997 206129469 250386227 256226139 258983179 265023603 284190333 321925149 332978373 364670397 365387571 377191269 465002993 480968761 520032933 527782047 537888141 597860991 618388407 663110777 751158681 776949537 852570999 965775447 998935119 1231491443 1395008979 1442906283 1583346141 1793582973 1855165221 1989332331 2253476043 2287055537 2330848611 2557712997 3255020951 3366781327 3694474329 4185026937 4328718849 4641775439 4750038423 5967996993 6760428129 6861166611 6992545833 8620440101 9765062853 10100343981 11083422987 12555080811 12986156547 13925326317 16009388759 17903990979 20583499833 25861320303 29295188559 30301031943 33250268961 41775978951 48028166277 60343080707 61750499499 77583960909 87885565677 90903095829 112065721313 125327936853 144084498831 181029242121 232751882727 336197163939 432253496493 543087726363 784460049191 1008591491817 1629263179089 2353380147573 3025774475451 7060140442719 21180421328157
• Sum of all divisors σ(n): 39960120096000
• Sum of proper divisors (its aliquot sum) s(n): 18779698767843
• 21180421328157 is a deficient number, because the sum of its proper divisors (18779698767843) is less than itself. Its deficiency is 2400722560314

Bases of 21180421328157

• Binary: 100110100001101110011011111010100110100011101₂
• Hexadecimal: 0x1343737D4D1D
• Base-36: 7IA5FZVH9

Squares and roots of 21180421328157

• 21180421328157 squared (21180421328157²) is 448610247638247935881016649
• 21180421328157 cubed (21180421328157³) is 9501754057106940018565466428736009485893
• The square root of 21180421328157 is 4602219.1742850535
• The cube root of 21180421328157 is 27668.0274787543

Scales and comparisons

• 21,180,421,328,157 seconds is equal to 673,471 years, 45 weeks, 6 days, 8 hours, 55 minutes, 57 seconds.
• To count from 1 to 21,180,421,328,157 would take you about one million, six hundred eighty-three thousand, six hundred seventy-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 21180421328157 cubic inches would be around 2305.7 feet tall.

Recreational maths with 21180421328157

• 21180421328157 backwards is 75182312408112
• The number of decimal digits it has is: 14
• The sum of 21180421328157's digits is 45
• More coming soon!