161238819890800521

Names of 161238819890800521

• Cardinal: 161238819890800521 can be written as One hundred sixty-one quadrillion, two hundred thirty-eight trillion, eight hundred nineteen billion, eight hundred ninety million, eight hundred thousand, five hundred twenty-one.

Scientific notation

• Scientific notation: 1.61238819890800521 × 10¹⁷

Factors of 161238819890800521

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3383

Divisors of 161238819890800521

• Number of divisors d(n): 105
• Complete list of divisors:
  1 3 9 27 67 81 201 243 603 729 1809 3313 4489 5427 9939 13467 16281 29817 40401 48843 89451 121203 221971 268353 300763 363609 665913 805059 902289 1090827 1997739 2415177 2706867 3272481 5993217 8120601 10975969 14872057 17979651 20151121 24361803 32927907 44616171 53938953 60453363 73085409 98783721 133848513 161816859 181360089 219256227 296351163 401545539 544080267 735389923 889053489 996427819 1204636617 1632240801 2206169769 2667160467 2989283457 3613909851 4896722403 6618509307 8001481401 8967850371 10841729553 14690167209 19855527921 26903551113 49271124841 59566583763 66760663873 80710653339 147813374523 178699751289 200281991619 242131960017 443440123569 536099253867 600845974857 726395880051 1330320370707 1802537924571 3301165364347 3990961112121 5407613773713 9903496093041 11972883336363 16222841321139 29710488279123 35918650009089 48668523963417 89131464837369 221178079411249 267394394512107 663534238233747 802183183536321 1990602714701241 2406549550608963 5971808144103723 17915424432311169 53746273296933507 161238819890800521
• Sum of all divisors σ(n): 245484581018600679
• Sum of proper divisors (its aliquot sum) s(n): 84245761127800158
• 161238819890800521 is a deficient number, because the sum of its proper divisors (84245761127800158) is less than itself. Its deficiency is 76993058763000363

Bases of 161238819890800521

• Binary: 1000111100110101011101101000110111100110000010011110001001₂
• Hexadecimal: 0x23CD5DA37982789
• Base-36: 183ME3A40RK9

Squares and roots of 161238819890800521

• 161238819890800521 squared (161238819890800521²) is 25997957039778009734774966213871441
• 161238819890800521 cubed (161238819890800521³) is 4191879912665535987775487579170144285742256069820761
• 161238819890800521 is a perfect square number. Its square root is 401545539
• The cube root of 161238819890800521 is 544281.0370826101

Scales and comparisons

• 161,238,819,890,800,521 seconds is equal to 5,126,895,728 years, 5 weeks, 5 days, 9 hours, 55 minutes, 21 seconds.
• To count from 1 to 161,238,819,890,800,521 would take you about fifteen billion, three hundred eighty million, six hundred eighty-seven thousand, one hundred eighty-four 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 161238819890800521 cubic inches would be around 45356.8 feet tall.

Recreational maths with 161238819890800521

• 161238819890800521 backwards is 125008098918832161
• The number of decimal digits it has is: 18
• The sum of 161238819890800521's digits is 72
• More coming soon!