18128638310068

Names of 18128638310068

• Cardinal: 18128638310068 can be written as Eighteen trillion, one hundred twenty-eight billion, six hundred thirty-eight million, three hundred ten thousand and sixty-eight.

Scientific notation

• Scientific notation: 1.8128638310068 × 10¹³

Factors of 18128638310068

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4155

Divisors of 18128638310068

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 11 13 22 26 44 52 121 143 169 242 286 338 484 572 676 1573 1859 2197 3146 3718 4129 4394 6292 7436 8258 8788 16516 20449 24167 40898 45419 48334 53677 81796 90838 96668 107354 181676 214708 265837 499609 531674 590447 697801 999218 1063348 1180894 1395602 1998436 2361788 2791204 6494917 7675811 9071413 12989834 15351622 17048641 18142826 25979668 30703244 34097282 36285652 68194564 84433921 99785543 168867842 187535051 199571086 221632333 337735684 375070102 399142172 443264666 750140204 886529332 1097640973 2062885561 2195281946 2437955663 2881220329 4125771122 4390563892 4875911326 5762440658 8251542244 9751822652 11524881316 26817512293 31693423619 37455864277 53635024586 63386847238 74911728554 107270049172 126773694476 149823457108 348627659809 412014507047 697255319618 824029014094 1394510639236 1648058028188 4532159577517 9064319155034 18128638310068
• Sum of all divisors σ(n): 37785188926380
• Sum of proper divisors (its aliquot sum) s(n): 19656550616312
• 18128638310068 is an abundant number, because the sum of its proper divisors (19656550616312) is greater than itself. Its abundance is 1527912306244

Bases of 18128638310068

• Binary: 100000111110011100111000010111111011010110100₂
• Hexadecimal: 0x107CE70BF6B4
• Base-36: 6FC6J6K6S

Squares and roots of 18128638310068

• 18128638310068 squared (18128638310068²) is 328647526977265150910164624
• 18128638310068 cubed (18128638310068³) is 5957932148069155545652395801315036634432
• The square root of 18128638310068 is 4257773.8678877721
• The cube root of 18128638310068 is 26269.6968707711

Scales and comparisons

• 18,128,638,310,068 seconds is equal to 576,434 years, 32 weeks, 2 days, 15 hours, 54 minutes, 28 seconds.
• To count from 1 to 18,128,638,310,068 would take you about one million, four hundred forty-one thousand and eighty-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 18128638310068 cubic inches would be around 2189.1 feet tall.

Recreational maths with 18128638310068

• 18128638310068 backwards is 86001383682181
• The number of decimal digits it has is: 14
• The sum of 18128638310068's digits is 55
• More coming soon!