128049729642909

Names of 128049729642909

• Cardinal: 128049729642909 can be written as One hundred twenty-eight trillion, forty-nine billion, seven hundred twenty-nine million, six hundred forty-two thousand, nine hundred nine.

Scientific notation

• Scientific notation: 1.28049729642909 × 10¹⁴

Factors of 128049729642909

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 212

Divisors of 128049729642909

• Number of divisors d(n): 180
• Complete list of divisors:
  1 3 9 27 29 81 83 87 97 249 261 291 747 783 841 873 2241 2349 2407 2523 2619 2813 6723 6889 7221 7569 7857 8051 8439 9409 20667 21663 22707 24153 24389 25317 28227 62001 64989 68121 69803 72459 73167 75951 81577 84681 186003 194967 199781 209409 217377 219501 227853 233479 244731 254043 272861 558009 599343 628227 652131 658503 668233 700437 734193 762129 780947 818583 1798029 1884681 1975509 2004699 2024287 2101311 2202579 2342841 2365733 2455749 5394087 5654043 5793649 6014097 6072861 6303933 6607737 6770891 7028523 7097199 7367247 7912969 16182261 17380947 18042291 18218583 18911799 19378757 20312673 21085569 21291597 22101741 22647463 23738907 52142841 54126873 54655749 58136271 60938019 63256707 63874791 64818601 67942389 71216721 156428523 163967247 168015821 174408813 182814057 191624373 194455803 196355839 203827167 213650163 229476101 469285569 504047463 523226439 548442171 561983953 583367409 589067517 611481501 640950489 656776427 688428303 1512142389 1569679317 1685951859 1750102227 1767202551 1834444503 1879739429 1970329281 2065284909 4536427167 5057855577 5250306681 5301607653 5639218287 5910987843 6195854727 13609281501 15173566731 15904822959 16297534637 16917654861 17732963529 18587564181 19046516383 45520700193 48892603911 50752964583 53198890587 54512443441 57139549149 146677811733 152258893749 163537330323 171418647447 440033435199 490611990969 514255942341 1320100305597 1471835972907 1542767827023 1580860859789 4415507918721 4742582579367 14227747738101 42683243214303 128049729642909
• Sum of all divisors σ(n): 202619796879060
• Sum of proper divisors (its aliquot sum) s(n): 74570067236151
• 128049729642909 is a deficient number, because the sum of its proper divisors (74570067236151) is less than itself. Its deficiency is 53479662406758

Bases of 128049729642909

• Binary: 11101000111010111100110101001100010000110011101₂
• Hexadecimal: 0x7475E6A6219D
• Base-36: 19E18EVST9

Squares and roots of 128049729642909

• 128049729642909 squared (128049729642909²) is 16396733261622087856653982281
• 128049729642909 cubed (128049729642909³) is 2099597261177601834954928159686406943295429
• The square root of 128049729642909 is 11315906.0460446119
• The cube root of 128049729642909 is 50403.3677574105

Scales and comparisons

• 128,049,729,642,909 seconds is equal to 4,071,585 years, 16 weeks, 4 days, 1 hour, 15 minutes, 9 seconds.
• To count from 1 to 128,049,729,642,909 would take you about ten million, one hundred seventy-eight thousand, nine hundred sixty-three 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 128049729642909 cubic inches would be around 4200.3 feet tall.

Recreational maths with 128049729642909

• 128049729642909 backwards is 909246927940821
• The number of decimal digits it has is: 15
• The sum of 128049729642909's digits is 72
• More coming soon!