642394801133203125

Names of 642394801133203125

• Cardinal: 642394801133203125 can be written as Six hundred forty-two quadrillion, three hundred ninety-four trillion, eight hundred one billion, one hundred thirty-three million, two hundred three thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 6.42394801133203125 × 10¹⁷

Factors of 642394801133203125

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 38

Divisors of 642394801133203125

• Number of divisors d(n): 324
• Complete list of divisors:
  1 3 5 7 15 21 23 25 35 69 75 105 115 125 161 175 345 375 483 525 529 575 625 805 875 1587 1725 1875 2415 2625 2645 2875 3125 3703 4025 4375 7935 8625 9375 11109 12075 12167 13125 13225 14375 15625 18515 20125 21875 36501 39675 43125 46875 55545 60375 60835 65625 66125 71875 78125 85169 92575 100625 109375 182505 198375 215625 234375 255507 277725 279841 301875 304175 328125 330625 359375 390625 425845 462875 503125 546875 839523 912525 991875 1078125 1171875 1277535 1388625 1399205 1509375 1520875 1640625 1653125 1796875 1958887 2129225 2314375 2515625 2734375 4197615 4562625 4959375 5390625 5876661 6387675 6436343 6943125 6996025 7546875 7604375 8203125 8265625 8984375 9794435 10646125 11571875 12578125 19309029 20988075 22813125 24796875 26953125 29383305 31938375 32181715 34715625 34980125 37734375 38021875 41328125 45054401 48972175 53230625 57859375 62890625 96545145 104940375 114065625 123984375 135163203 146916525 148035889 159691875 160908575 173578125 174900625 188671875 190109375 206640625 225272005 244860875 266153125 289296875 444107667 482725725 524701875 570328125 619921875 675816015 734582625 740179445 798459375 804542875 867890625 874503125 950546875 1036251223 1126360025 1224304375 1330765625 1446484375 2220538335 2413628625 2623509375 2851640625 3108753669 3379080075 3404825447 3672913125 3700897225 3992296875 4022714375 4339453125 4372515625 4752734375 5181256115 5631800125 6121521875 6653828125 10214476341 11102691675 12068143125 13117546875 14258203125 15543768345 16895400375 17024127235 18364565625 18504486125 19961484375 20113571875 21862578125 23833778129 25906280575 28159000625 30607609375 33269140625 51072381705 55513458375 60340715625 65587734375 71501334387 77718841725 78310985281 84477001875 85120636175 91822828125 92522430625 99807421875 100567859375 109312890625 119168890645 129531402875 140795003125 153038046875 234932955843 255361908525 277567291875 301703578125 327938671875 357506671935 388594208625 391554926405 422385009375 425603180875 459114140625 462612153125 502839296875 548176896967 595844453225 647657014375 703975015625 765190234375 1174664779215 1276809542625 1387836459375 1508517890625 1644530690901 1787533359675 1942971043125 1957774632025 2111925046875 2128015904375 2295570703125 2313060765625 2514196484375 2740884484835 2979222266125 3238285071875 3519875078125 5873323896075 6384047713125 6939182296875 7542589453125 8222653454505 8937666798375 9714855215625 9788873160125 10559625234375 10640079521875 11565303828125 13704422424175 14896111330625 16191425359375 17599375390625 29366619480375 31920238565625 34695911484375 41113267272525 44688333991875 48574276078125 48944365800625 52798126171875 53200397609375 57826519140625 68522112120875 74480556653125 80957126796875 146833097401875 159601192828125 173479557421875 205566336362625 223441669959375 242871380390625 244721829003125 266001988046875 342610560604375 372402783265625 404785633984375 734165487009375 798005964140625 1027831681813125 1117208349796875 1214356901953125 1223609145015625 1330009940234375 1713052803021875 1862013916328125 3670827435046875 3990029820703125 5139158409065625 5586041748984375 6118045725078125 8565264015109375 9310069581640625 18354137175234375 25695792045328125 27930208744921875 30590228625390625 42826320075546875 91770685876171875 128478960226640625 214131600377734375 642394801133203125
• Sum of all divisors σ(n): 1279227087551020832
• Sum of proper divisors (its aliquot sum) s(n): 636832286417817707
• 642394801133203125 is a deficient number, because the sum of its proper divisors (636832286417817707) is less than itself. Its deficiency is 5562514715385418

Bases of 642394801133203125

• Binary: 100011101010001111101010101100000111000110100010111010110101₂
• Hexadecimal: 0x8EA3EAB071A2EB5
• Base-36: 4VP9Y9KKGH4L

Squares and roots of 642394801133203125

• 642394801133203125 squared (642394801133203125²) is 412671080522967590971649322509765625
• 642394801133203125 cubed (642394801133203125³) is 265097756705975819054467980566591185390949249267578125
• The square root of 642394801133203125 is 801495353.1575857645
• The cube root of 642394801133203125 is 862847.4219812681

Scales and comparisons

• 642,394,801,133,203,125 seconds is equal to 20,426,167,618 years, 23 weeks, 2 days, 18 hours, 38 minutes, 45 seconds.
• To count from 1 to 642,394,801,133,203,125 would take you about sixty-one billion, two hundred seventy-eight million, five hundred two thousand, eight hundred fifty-five 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 642394801133203125 cubic inches would be around 71904 feet tall.

Recreational maths with 642394801133203125

• 642394801133203125 backwards is 521302331108493246
• The number of decimal digits it has is: 18
• The sum of 642394801133203125's digits is 57
• More coming soon!