64816894720

Names of 64816894720

• Cardinal: 64816894720 can be written as Sixty-four billion, eight hundred sixteen million, eight hundred ninety-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.481689472 × 10¹⁰

Factors of 64816894720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 491743

Divisors of 64816894720

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 103 128 160 206 256 320 412 515 640 824 1030 1280 1648 2060 3296 4120 6592 8240 13184 16480 26368 32960 65920 131840 491633 983266 1966532 2458165 3933064 4916330 7866128 9832660 15732256 19665320 31464512 39330640 50638199 62929024 78661280 101276398 125858048 157322560 202552796 253190995 314645120 405105592 506381990 629290240 810211184 1012763980 1620422368 2025527960 3240844736 4051055920 6481689472 8102111840 12963378944 16204223680 32408447360 64816894720
• Sum of all divisors σ(n): 156764383776
• Sum of proper divisors (its aliquot sum) s(n): 91947489056
• 64816894720 is an abundant number, because the sum of its proper divisors (91947489056) is greater than itself. Its abundance is 27130594336

Bases of 64816894720

• Binary: 111100010111011000110101001100000000₂
• Hexadecimal: 0xF17635300
• Base-36: TRYB01S

Squares and roots of 64816894720

• 64816894720 squared (64816894720²) is 4201229841143563878400
• 64816894720 cubed (64816894720³) is 272310672307924704311847682048000
• The square root of 64816894720 is 254591.6234285803
• The cube root of 64816894720 is 4016.9467406005

Scales and comparisons

• 64,816,894,720 seconds is equal to 2,060 years, 50 weeks, 5 days, 12 hours, 58 minutes, 40 seconds.
• To count from 1 to 64,816,894,720 would take you about four thousand, one hundred twenty-one 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 64816894720 cubic inches would be around 334.7 feet tall.

Recreational maths with 64816894720

• 64816894720 backwards is 02749861846
• The number of decimal digits it has is: 11
• The sum of 64816894720's digits is 55
• More coming soon!