21118638601728

Names of 21118638601728

• Cardinal: 21118638601728 can be written as Twenty-one trillion, one hundred eighteen billion, six hundred thirty-eight million, six hundred one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1118638601728 × 10¹³

Factors of 21118638601728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 20668

Divisors of 21118638601728

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 27 32 36 46 48 54 64 69 72 92 96 108 128 138 144 184 192 207 216 256 276 288 368 384 414 432 512 552 576 621 736 768 828 864 1104 1152 1242 1472 1536 1656 1728 2208 2304 2484 2944 3312 3456 3989 4416 4608 4968 5888 6624 6912 7978 8832 9936 11776 11967 13248 13824 15956 16651 17664 19872 23934 26496 31912 33302 35328 35901 39744 47868 49953 52992 63824 66604 71802 79488 91747 95736 99906 105984 107703 127648 133208 143604 149859 158976 183494 191472 199812 215406 255296 266416 275241 287208 299718 317952 366988 382944 382973 399624 430812 449577 510592 532832 550482 574416 599436 733976 765888 765946 799248 825723 861624 899154 1021184 1065664 1100964 1148832 1148919 1198872 1467952 1531776 1531892 1598496 1651446 1723248 1798308 2042368 2131328 2201928 2297664 2297838 2397744 2477169 2935904 3063552 3063784 3196992 3302892 3446496 3446757 3596616 4262656 4403856 4595328 4595676 4795488 4954338 5871808 6127104 6127568 6393984 6605784 6892992 6893514 7193232 8525312 8807712 9190656 9191352 9590976 9908676 10340271 11743616 12255136 12787968 13211568 13785984 13787028 14386464 17615424 18381312 18382704 19181952 19817352 20680542 23487232 24510272 25575936 26423136 27571968 27574056 28772928 35230848 36765408 38363904 39634704 41361084 46974464 49020544 52846272 55143936 55148112 57545856 66420839 70461696 73530816 76727808 79269408 82722168 98041088 105692544 110296224 115091712 132841678 140923392 147061632 158538816 165444336 196082176 199262517 211385088 220592448 230183424 265683356 294123264 317077632 330888672 398525034 422770176 441184896 531366712 588246528 597787551 634155264 661777344 797050068 882369792 1062733424 1195575102 1268310528 1323554688 1527679297 1594100136 1764739584 1793362653 2125466848 2391150204 2647109376 3055358594 3188200272 3586725306 4250933696 4583037891 4782300408 5294218752 6110717188 6376400544 7173450612 8501867392 9166075782 9564600816 12221434376 12752801088 13749113673 14346901224 17003734784 18332151564 19129201632 24442868752 25505602176 27498227346 28693802448 34007469568 36664303128 38258403264 41247341019 48885737504 51011204352 54996454692 57387604896 73328606256 76516806528 82494682038 97771475008 102022408704 109992909384 114775209792 146657212512 153033613056 164989364076 195542950016 219985818768 229550419584 293314425024 306067226112 329978728152 391085900032 439971637536 459100839168 586628850048 659957456304 782171800064 879943275072 918201678336 1173257700096 1319914912608 1759886550144 2346515400192 2639829825216 3519773100288 5279659650432 7039546200576 10559319300864 21118638601728
• Sum of all divisors σ(n): 65250848678400
• Sum of proper divisors (its aliquot sum) s(n): 44132210076672
• 21118638601728 is an abundant number, because the sum of its proper divisors (44132210076672) is greater than itself. Its abundance is 23013571474944

Bases of 21118638601728

• Binary: 100110011010100010000111100111011011000000000₂
• Hexadecimal: 0x133510F3B600
• Base-36: 7HHRO5MO0

Squares and roots of 21118638601728

• 21118638601728 squared (21118638601728²) is 445996896390395975004585984
• 21118638601728 cubed (21118638601728³) is 9418847272361099743979088983529306980352
• The square root of 21118638601728 is 4595501.9967059093
• The cube root of 21118638601728 is 27641.0989781007

Scales and comparisons

• 21,118,638,601,728 seconds is equal to 671,507 years, 19 weeks, 6 days, 12 hours, 28 minutes, 48 seconds.
• To count from 1 to 21,118,638,601,728 would take you about one million, six hundred seventy-eight thousand, seven hundred sixty-eight 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 21118638601728 cubic inches would be around 2303.4 feet tall.

Recreational maths with 21118638601728

• 21118638601728 backwards is 82710683681112
• 21118638601728 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21118638601728's digits is 54
• More coming soon!