18668395635840

Names of 18668395635840

• Cardinal: 18668395635840 can be written as Eighteen trillion, six hundred sixty-eight billion, three hundred ninety-five million, six hundred thirty-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.866839563584 × 10¹³

Factors of 18668395635840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 931900

Divisors of 18668395635840

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 128 144 160 180 192 240 288 320 360 384 480 576 640 720 960 1152 1440 1920 2880 3491 5760 6982 10473 13964 17455 20946 27928 31419 34910 41892 52365 55856 62838 69820 83784 104730 111712 125676 139640 157095 167568 209460 223424 251352 279280 314190 335136 418920 446848 502704 558560 628380 670272 837840 928399 1005408 1117120 1256760 1340544 1675680 1856798 2010816 2234240 2513520 2785197 3351360 3713596 4021632 4641995 5027040 5570394 6702720 7427192 8355591 9283990 10054080 11140788 13925985 14854384 16711182 18567980 20108160 22281576 27851970 29708768 33422364 37135960 41777955 44563152 55703940 59417536 66844728 74271920 83555910 89126304 111407880 118835072 133689456 148543840 167111820 178252608 222815760 267378912 297087680 334223640 356505216 445631520 534757824 594175360 668447280 891263040 1069515648 1336894560 1782526080 2673789120 3241040909 5347578240 6482081818 9723122727 12964163636 16205204545 19446245454 25928327272 29169368181 32410409090 38892490908 48615613635 51856654544 58338736362 64820818180 77784981816 97231227270 103713309088 116677472724 129641636360 145846840905 155569963632 194462454540 207426618176 233354945448 259283272720 291693681810 311139927264 388924909080 414853236352 466709890896 518566545440 583387363620 622279854528 777849818160 933419781792 1037133090880 1166774727240 1244559709056 1555699636320 1866839563584 2074266181760 2333549454480 3111399272640 3733679127168 4667098908960 6222798545280 9334197817920 18668395635840
• Sum of all divisors σ(n): 64482838992000
• Sum of proper divisors (its aliquot sum) s(n): 45814443356160
• 18668395635840 is an abundant number, because the sum of its proper divisors (45814443356160) is greater than itself. Its abundance is 27146047720320

Bases of 18668395635840

• Binary: 100001111101010010011000101110010010010000000₂
• Hexadecimal: 0x10FA93172480
• Base-36: 6M854RA80

Squares and roots of 18668395635840

• 18668395635840 squared (18668395635840²) is 348508995616249957892505600
• 18668395635840 cubed (18668395635840³) is 6506103812813382405307035306882760704000
• The square root of 18668395635840 is 4320693.8836071227
• The cube root of 18668395635840 is 26527.8670353637

Scales and comparisons

• 18,668,395,635,840 seconds is equal to 593,597 years, 12 weeks, 1 day, 22 hours, 24 minutes.
• To count from 1 to 18,668,395,635,840 would take you about one million, four hundred eighty-three thousand, nine hundred ninety-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 18668395635840 cubic inches would be around 2210.7 feet tall.

Recreational maths with 18668395635840

• 18668395635840 backwards is 04853659386681
• 18668395635840 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18668395635840's digits is 72
• More coming soon!