161384638821

Names of 161384638821

• Cardinal: 161384638821 can be written as One hundred sixty-one billion, three hundred eighty-four million, six hundred thirty-eight thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.61384638821 × 10¹¹

Factors of 161384638821

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 565

Divisors of 161384638821

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 19 21 23 31 57 69 73 93 133 161 217 219 361 399 409 437 483 511 589 651 713 1083 1227 1311 1387 1533 1679 1767 2139 2263 2527 2863 3059 4123 4161 4991 5037 6789 7581 7771 8303 8589 9177 9407 9709 11191 11753 12369 12679 13547 14973 15841 23313 24909 26353 28221 29127 29857 31901 33573 35259 38037 40641 42997 47523 52049 54397 58121 65849 78337 79059 88753 89571 94829 95703 128991 147649 156147 163191 174363 178733 184471 197547 208999 223307 235011 240901 257393 266259 284487 291617 300979 364343 442947 536199 553413 567283 606119 626997 669921 686711 722703 772179 816943 874851 902937 925567 988931 1033543 1093029 1251131 1686307 1701849 1801751 1818357 2041319 2060133 2450829 2776701 2966793 3100629 3395927 3753393 3970981 4242833 4577119 4806977 5058921 5405253 5540723 5718601 6123957 6478969 6922517 10187781 10778377 11912943 12728499 13047509 13731357 14420931 16622169 17155803 17585773 18789689 19436907 20767551 21288041 23771489 32039833 32335131 38785061 39142527 52757319 56369067 63864123 71314467 75448639 91332563 96119499 105273737 116355183 123100411 131527823 149016287 226345917 247902671 273997689 315821211 334129687 369301233 394583469 404472779 447048861 736916159 743708013 1002389061 1213418337 1735318697 2210748477 2338907809 2831309453 5205956091 7016723427 7684982801 8493928359 23054948403 53794879607 161384638821
• Sum of all divisors σ(n): 284087255040
• Sum of proper divisors (its aliquot sum) s(n): 122702616219
• 161384638821 is a deficient number, because the sum of its proper divisors (122702616219) is less than itself. Its deficiency is 38682022602

Bases of 161384638821

• Binary: 10010110010011010001100010100101100101₂
• Hexadecimal: 0x2593462965
• Base-36: 22508W9X

Squares and roots of 161384638821

• 161384638821 squared (161384638821²) is 26045001647384620270041
• 161384638821 cubed (161384638821³) is 4203263183955516941550802271861661
• The square root of 161384638821 is 401727.0700624989
• The cube root of 161384638821 is 5444.4506409375

Scales and comparisons

• 161,384,638,821 seconds is equal to 5,131 years, 27 weeks, 4 days, 18 hours, 20 minutes, 21 seconds.
• To count from 1 to 161,384,638,821 would take you about ten thousand, two 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 161384638821 cubic inches would be around 453.7 feet tall.

Recreational maths with 161384638821

• 161384638821 backwards is 128836483161
• The number of decimal digits it has is: 12
• The sum of 161384638821's digits is 51
• More coming soon!