51438987642

Names of 51438987642

• Cardinal: 51438987642 can be written as Fifty-one billion, four hundred thirty-eight million, nine hundred eighty-seven thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 5.1438987642 × 10¹⁰

Factors of 51438987642

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 882

Divisors of 51438987642

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 14 21 31 42 49 62 93 98 147 186 217 294 343 434 651 686 839 961 1029 1302 1519 1678 1922 2058 2517 2883 3038 4557 5034 5766 5873 6727 9114 10633 11746 13454 17619 20181 21266 26009 29791 31899 35238 40362 41111 47089 52018 59582 63798 78027 82222 89373 94178 123333 141267 156054 178746 182063 208537 246666 282534 287777 329623 364126 417074 546189 575554 625611 659246 806279 863331 988869 1092378 1251222 1274441 1459759 1612558 1726662 1977738 2418837 2548882 2919518 3823323 4379277 4837674 5643953 7646646 8758554 8921087 10218313 11287906 16931859 17842174 20436626 24994649 26763261 30654939 33863718 39507671 49989298 53526522 61309878 74983947 79015342 118523013 149967894 174962543 237046026 276553697 349925086 524887629 553107394 829661091 1049775258 1224737801 1659322182 2449475602 3674213403 7348426806 8573164607 17146329214 25719493821 51438987642
• Sum of all divisors σ(n): 124121088000
• Sum of proper divisors (its aliquot sum) s(n): 72682100358
• 51438987642 is an abundant number, because the sum of its proper divisors (72682100358) is greater than itself. Its abundance is 21243112716

Bases of 51438987642

• Binary: 101111111010000000001010100101111010₂
• Hexadecimal: 0xBFA00A97A
• Base-36: NMPG0VU

Squares and roots of 51438987642

• 51438987642 squared (51438987642²) is 2645969449633828720164
• 51438987642 cubed (51438987642³) is 136105989820824056961660672213288
• The square root of 51438987642 is 226801.6482347515
• The cube root of 51438987642 is 3719.0396131909

Scales and comparisons

• 51,438,987,642 seconds is equal to 1,635 years, 31 weeks, 1 day, 15 hours, 40 minutes, 42 seconds.
• To count from 1 to 51,438,987,642 would take you about three thousand, two hundred seventy-one 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 51438987642 cubic inches would be around 309.9 feet tall.

Recreational maths with 51438987642

• 51438987642 backwards is 24678983415
• The number of decimal digits it has is: 11
• The sum of 51438987642's digits is 57
• More coming soon!