642645669168

Names of 642645669168

• Cardinal: 642645669168 can be written as Six hundred forty-two billion, six hundred forty-five million, six hundred sixty-nine thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 6.42645669168 × 10¹¹

Factors of 642645669168

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 641

Divisors of 642645669168

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 36 38 48 57 72 76 114 144 152 171 228 304 342 456 617 684 912 1234 1368 1851 2468 2736 3702 4936 5553 7404 9872 11106 11723 14808 22212 23446 29616 35169 44424 46892 70338 88848 93784 105507 140676 187568 211014 281352 380689 422028 562704 761378 844056 1142067 1522756 1688112 2284134 3045512 3426201 4568268 6091024 6852402 7233091 9136536 13704804 14466182 18273072 21699273 27409608 28932364 43398546 54819216 57864728 65097819 86797092 115729456 130195638 173594184 234885113 260391276 347188368 469770226 520782552 704655339 939540452 1041565104 1409310678 1879080904 2113966017 2818621356 3758161808 4227932034 4462817147 5637242712 8455864068 8925634294 11274485424 13388451441 16911728136 17851268588 26776902882 33823456272 35702537176 40165354323 53553805764 71405074352 80330708646 107107611528 160661417292 214215223056 321322834584 642645669168
• Sum of all divisors σ(n): 1896247345200
• Sum of proper divisors (its aliquot sum) s(n): 1253601676032
• 642645669168 is an abundant number, because the sum of its proper divisors (1253601676032) is greater than itself. Its abundance is 610956006864

Bases of 642645669168

• Binary: 1001010110100000101010101011010100110000₂
• Hexadecimal: 0x95A0AAB530
• Base-36: 8786MZW0

Squares and roots of 642645669168

• 642645669168 squared (642645669168²) is 412993456100386505812224
• 642645669168 cubed (642645669168³) is 265408455957637917811134013834309632
• The square root of 642645669168 is 801651.8378747721
• The cube root of 642645669168 is 8629.5972709611

Scales and comparisons

• 642,645,669,168 seconds is equal to 20,434 years, 7 weeks, 3 days, 13 hours, 52 minutes, 48 seconds.
• To count from 1 to 642,645,669,168 would take you about forty thousand, eight hundred sixty-eight 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 642645669168 cubic inches would be around 719.1 feet tall.

Recreational maths with 642645669168

• 642645669168 backwards is 861966546246
• The number of decimal digits it has is: 12
• The sum of 642645669168's digits is 63
• More coming soon!