61381389664

Names of 61381389664

• Cardinal: 61381389664 can be written as Sixty-one billion, three hundred eighty-one million, three hundred eighty-nine thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 6.1381389664 × 10¹⁰

Factors of 61381389664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 182668

Divisors of 61381389664

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 8 14 16 19 28 32 38 56 76 79 112 133 152 158 224 266 304 316 532 553 608 632 1064 1106 1264 1501 2128 2212 2528 3002 4256 4424 6004 8848 10507 12008 17696 21014 24016 42028 48032 84056 168112 182561 336224 365122 730244 1277927 1460488 2555854 2920976 3468659 5111708 5841952 6937318 10223416 13874636 14422319 20446832 24280613 27749272 28844638 40893664 48561226 55498544 57689276 97122452 100956233 110997088 115378552 194244904 201912466 230757104 274024061 388489808 403824932 461514208 548048122 776979616 807649864 1096096244 1615299728 1918168427 2192192488 3230599456 3836336854 4384384976 7672673708 8768769952 15345347416 30690694832 61381389664
• Sum of all divisors σ(n): 147217996800
• Sum of proper divisors (its aliquot sum) s(n): 85836607136
• 61381389664 is an abundant number, because the sum of its proper divisors (85836607136) is greater than itself. Its abundance is 24455217472

Bases of 61381389664

• Binary: 111001001010100111011010110101100000₂
• Hexadecimal: 0xE4A9DAD60
• Base-36: S74W7DS

Squares and roots of 61381389664

• 61381389664 squared (61381389664²) is 3767674997083806032896
• 61381389664 cubed (61381389664³) is 231265127123311161769383378386944
• The square root of 61381389664 is 247752.6784194269
• The cube root of 61381389664 is 3944.6841843325

Scales and comparisons

• 61,381,389,664 seconds is equal to 1,951 years, 38 weeks, 2 days, 18 hours, 1 minute, 4 seconds.
• To count from 1 to 61,381,389,664 would take you about three thousand, nine hundred 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 61381389664 cubic inches would be around 328.7 feet tall.

Recreational maths with 61381389664

• 61381389664 backwards is 46698318316
• The number of decimal digits it has is: 11
• The sum of 61381389664's digits is 55
• More coming soon!