18155942000861385

Names of 18155942000861385

• Cardinal: 18155942000861385 can be written as Eighteen quadrillion, one hundred fifty-five trillion, nine hundred forty-two billion, eight hundred sixty-one thousand, three hundred eighty-five.

Scientific notation

• Scientific notation: 1.8155942000861385 × 10¹⁶

Factors of 18155942000861385

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7793447

Divisors of 18155942000861385

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 7 15 21 35 79 105 237 257 395 553 771 1093 1185 1285 1659 1799 2765 3279 3855 5397 5465 7651 8295 8995 16395 20303 22953 26985 38255 60909 86347 101515 114765 142121 259041 280901 304545 426363 431735 604429 710605 842703 1295205 1404505 1813287 1966307 2131815 3022145 4213515 5898921 7792003 9066435 9831535 22191179 23376009 29494605 38960015 54544021 66573537 110955895 116880045 155338253 163632063 272720105 332867685 466014759 615568237 776691265 818160315 1846704711 2002544771 2330073795 3077841185 4308977659 6007634313 8516659279 9233523555 10012723855 12926932977 14017813397 21544888295 25549977837 30038171565 42053440191 42583296395 59616614953 64634664885 70089066985 127749889185 158201036909 178849844859 210267200955 298083074765 474603110727 672816083041 791005184545 894249224295 1107407258363 2018448249123 2188781434703 2373015553635 3322221775089 3364080415205 4709712581287 5537036291815 6566344304109 10092241245615 10943907173515 14129137743861 15321470042921 16611108875445 23548562906435 32831721520545 45964410128763 70645688719305 76607350214605 172913733341537 229822050643815 518741200024611 864568666707685 1210396133390759 2593706000123055 3631188400172277 6051980666953795 18155942000861385
• Sum of all divisors σ(n): 33781381831802880
• Sum of proper divisors (its aliquot sum) s(n): 15625439830941495
• 18155942000861385 is a deficient number, because the sum of its proper divisors (15625439830941495) is less than itself. Its deficiency is 2530502169919890

Bases of 18155942000861385

• Binary: 1000000100000001011101110101001100001100010000011001001₂
• Hexadecimal: 0x4080BBA98620C9
• Base-36: 4YRQSLYS5HL

Squares and roots of 18155942000861385

• 18155942000861385 squared (18155942000861385²) is 329638229938642512200081984118225
• 18155942000861385 cubed (18155942000861385³) is 5984892584032602436934678479266881862839677241625
• The square root of 18155942000861385 is 134743986.8820178001
• The cube root of 18155942000861385 is 262828.7859056535

Scales and comparisons

• 18,155,942,000,861,385 seconds is equal to 577,302,795 years, 31 weeks, 5 days, 13 hours, 29 minutes, 45 seconds.
• To count from 1 to 18,155,942,000,861,385 would take you about one billion, seven hundred thirty-one million, nine hundred eight thousand, three hundred eighty-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 18155942000861385 cubic inches would be around 21902.4 feet tall.

Recreational maths with 18155942000861385

• 18155942000861385 backwards is 58316800024955181
• The number of decimal digits it has is: 17
• The sum of 18155942000861385's digits is 66
• More coming soon!