640993788162

Names of 640993788162

• Cardinal: 640993788162 can be written as Six hundred forty billion, nine hundred ninety-three million, seven hundred eighty-eight thousand, one hundred sixty-two.

Scientific notation

• Scientific notation: 6.40993788162 × 10¹¹

Factors of 640993788162

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 47645

Divisors of 640993788162

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 26 39 42 63 78 91 117 126 182 234 273 546 819 1638 10559 21118 31677 37061 63354 73913 74122 95031 111183 137267 147826 190062 221739 222366 259427 274534 333549 411801 443478 481793 518854 665217 667098 778281 823602 960869 963586 1235403 1330434 1445379 1556562 1921738 2334843 2470806 2882607 2890758 3372551 4336137 4669686 5765214 6745102 8647821 8672274 10117653 17295642 20235306 30352959 60705918 391327099 782654198 1173981297 2347962594 2739289693 3521943891 5087252287 5478579386 7043887782 8217869079 10174504574 15261756861 16435738158 24653607237 30523513722 35610766009 45785270583 49307214474 71221532018 91570541166 106832298027 213664596054 320496894081 640993788162
• Sum of all divisors σ(n): 1709524776960
• Sum of proper divisors (its aliquot sum) s(n): 1068530988798
• 640993788162 is an abundant number, because the sum of its proper divisors (1068530988798) is greater than itself. Its abundance is 427537200636

Bases of 640993788162

• Binary: 1001010100111110001101010000000100000010₂
• Hexadecimal: 0x953E350102
• Base-36: 86GV5GCI

Squares and roots of 640993788162

• 640993788162 squared (640993788162²) is 410873036462270931338244
• 640993788162 cubed (640993788162³) is 263367064095574595267676821705067528
• The square root of 640993788162 is 800620.8766713493
• The cube root of 640993788162 is 8622.1969777145

Scales and comparisons

• 640,993,788,162 seconds is equal to 20,381 years, 32 weeks, 1 day, 14 hours, 2 minutes, 42 seconds.
• To count from 1 to 640,993,788,162 would take you about forty thousand, seven 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 640993788162 cubic inches would be around 718.5 feet tall.

Recreational maths with 640993788162

• 640993788162 backwards is 261887399046
• 640993788162 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640993788162's digits is 63
• More coming soon!