640655502688

Names of 640655502688

• Cardinal: 640655502688 can be written as Six hundred forty billion, six hundred fifty-five million, five hundred two thousand, six hundred eighty-eight.

Scientific notation

• Scientific notation: 6.40655502688 × 10¹¹

Factors of 640655502688

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5568

Divisors of 640655502688

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 8 16 32 41 82 97 164 194 328 388 656 776 1187 1312 1552 2374 3104 3977 4241 4748 7954 8482 9496 15908 16964 18992 31816 33928 37984 48667 63632 67856 97334 115139 127264 135712 173881 194668 230278 347762 389336 411377 460556 695524 778672 822754 921112 1391048 1557344 1645508 1842224 2782096 3291016 3684448 4720699 5034067 5564192 6582032 9441398 10068134 13164064 16866457 18882796 20136268 33732914 37765592 40272536 67465828 75531184 80545072 134931656 151062368 161090144 206396747 269863312 412793494 488304499 539726624 825586988 976608998 1651173976 1953217996 3302347952 3906435992 6604695904 7812871984 15625743968 20020484459 40040968918 80081937836 160163875672 320327751344 640655502688
• Sum of all divisors σ(n): 1306781628768
• Sum of proper divisors (its aliquot sum) s(n): 666126126080
• 640655502688 is an abundant number, because the sum of its proper divisors (666126126080) is greater than itself. Its abundance is 25470623392

Bases of 640655502688

• Binary: 1001010100101010000010110010110101100000₂
• Hexadecimal: 0x952A0B2D60
• Base-36: 86B9QTLS

Squares and roots of 640655502688

• 640655502688 squared (640655502688²) is 410439473124413975225344
• 640655502688 cubed (640655502688³) is 262950306977519301263405138397724672
• The square root of 640655502688 is 800409.5843304225
• The cube root of 640655502688 is 8620.6799181607

Scales and comparisons

• 640,655,502,688 seconds is equal to 20,370 years, 44 weeks, 6 days, 5 hours, 51 minutes, 28 seconds.
• To count from 1 to 640,655,502,688 would take you about forty thousand, seven hundred forty-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 640655502688 cubic inches would be around 718.4 feet tall.

Recreational maths with 640655502688

• 640655502688 backwards is 886205556046
• The number of decimal digits it has is: 12
• The sum of 640655502688's digits is 55
• More coming soon!