8420901749845

Names of 8420901749845

• Cardinal: 8420901749845 can be written as Eight trillion, four hundred twenty billion, nine hundred one million, seven hundred forty-nine thousand, eight hundred forty-five.

Scientific notation

• Scientific notation: 8.420901749845 × 10¹²

Factors of 8420901749845

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 17468

Divisors of 8420901749845

• Number of divisors d(n): 144
• Complete list of divisors:
  1 5 13 19 37 43 65 95 169 185 215 247 361 481 559 703 817 845 1235 1591 1805 2405 2795 3211 3515 4085 4693 6253 7267 7955 9139 10621 13357 15523 16055 17351 20683 23465 30229 31265 36335 45695 53105 61009 66785 77615 86755 103415 118807 138073 151145 173641 201799 225563 268879 305045 329669 392977 574351 594035 641987 690365 746093 868205 1008995 1127815 1344395 1648345 1964885 2257333 2623387 2871755 2932319 3209935 3730465 4285697 5108701 6263711 7466563 8345831 9699209 11286665 12197753 13116935 14175767 14661595 21428485 25543505 27605441 31318555 37332815 41729155 48496045 55714061 60988765 70878835 81428243 97065319 108495803 126089717 138027205 158570789 184284971 231757307 269339573 278570305 358870733 407141215 485326595 524503379 542479015 630448585 792853945 921424855 1058567159 1158786535 1346697865 1794353665 2061420257 2395704623 2622516895 3012844991 3501414449 4665319529 5292835795 6818543927 9965564201 10307101285 11978523115 15064224955 17507072245 23326597645 34092719635 39166984883 45518387837 49827821005 88641071051 129552334613 195834924415 227591939185 443205355255 647761673065 1684180349969 8420901749845
• Sum of all divisors σ(n): 12137049631872
• Sum of proper divisors (its aliquot sum) s(n): 3716147882027
• 8420901749845 is a deficient number, because the sum of its proper divisors (3716147882027) is less than itself. Its deficiency is 4704753867818

Bases of 8420901749845

• Binary: 1111010100010100100110110111000010001010101₂
• Hexadecimal: 0x7A8A4DB8455
• Base-36: 2ZGIBHAVP

Squares and roots of 8420901749845

• 8420901749845 squared (8420901749845²) is 70911586280542582957524025
• 8420901749845 cubed (8420901749845³) is 597139500994105731903050137431127526125
• The square root of 8420901749845 is 2901879.0033088905
• The cube root of 8420901749845 is 20344.7738552031

Scales and comparisons

• 8,420,901,749,845 seconds is equal to 267,758 years, 32 weeks, 4 days, 14 hours, 57 minutes, 25 seconds.
• To count from 1 to 8,420,901,749,845 would take you about six hundred sixty-nine thousand, three hundred ninety-six 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 8420901749845 cubic inches would be around 1695.4 feet tall.

Recreational maths with 8420901749845

• 8420901749845 backwards is 5489471090248
• The number of decimal digits it has is: 13
• The sum of 8420901749845's digits is 61
• More coming soon!