642823640390640640

Names of 642823640390640640

• Cardinal: 642823640390640640 can be written as Six hundred forty-two quadrillion, eight hundred twenty-three trillion, six hundred forty billion, three hundred ninety million, six hundred forty thousand, six hundred forty.

Scientific notation

• Scientific notation: 6.4282364039064064 × 10¹⁷

Factors of 642823640390640640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1664721146

Divisors of 642823640390640640

• Number of divisors d(n): 176
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 53 64 80 106 128 160 212 256 265 320 424 512 530 640 848 1024 1060 1280 1423 1696 2120 2560 2846 3392 4240 5120 5692 6784 7115 8480 11384 13568 14230 16960 22768 27136 28460 33920 45536 54272 56920 67840 75419 91072 113840 135680 150838 182144 227680 271360 301676 364288 377095 455360 603352 728576 754190 910720 1206704 1457152 1508380 1821440 2413408 3016760 3642880 4826816 6033520 7285760 9653632 12067040 19307264 24134080 38614528 48268160 77229056 96536320 193072640 386145280 1664719663 3329439326 6658878652 8323598315 13317757304 16647196630 26635514608 33294393260 53271029216 66588786520 88230142139 106542058432 133177573040 176460284278 213084116864 266355146080 352920568556 426168233728 441150710695 532710292160 705841137112 852336467456 882301421390 1065420584320 1411682274224 1704672934912 1764602842780 2130841168640 2368896080449 2823364548448 3529205685560 4261682337280 4737792160898 5646729096896 7058411371120 8523364674560 9475584321796 11293458193792 11844480402245 14116822742240 18951168643592 22586916387584 23688960804490 28233645484480 37902337287184 45173832775168 47377921608980 56467290968960 75804674574368 90347665550336 94755843217960 112934581937920 125551492263797 151609349148736 189511686435920 225869163875840 251102984527594 303218698297472 379023372871840 451738327751680 502205969055188 606437396594944 627757461318985 758046745743680 1004411938110376 1212874793189888 1255514922637970 1516093491487360 2008823876220752 2425749586379776 2511029845275940 3032186982974720 4017647752441504 5022059690551880 6064373965949440 8035295504883008 10044119381103760 12128747931898880 16070591009766016 20088238762207520 32141182019532032 40176477524415040 64282364039064064 80352955048830080 128564728078128128 160705910097660160 321411820195320320 642823640390640640
• Sum of all divisors σ(n): 1572222299281118208
• Sum of proper divisors (its aliquot sum) s(n): 929398658890477568
• 642823640390640640 is an abundant number, because the sum of its proper divisors (929398658890477568) is greater than itself. Its abundance is 286575018499836928

Bases of 642823640390640640

• Binary: 100011101011110001001011000111110010101101010010010000000000₂
• Hexadecimal: 0x8EBC4B1F2B52400
• Base-36: 4VTHYNLU18N4

Squares and roots of 642823640390640640

• 642823640390640640 squared (642823640390640640²) is 413222232645075676426059309619609600
• 642823640390640640 cubed (642823640390640640³) is 265629019879255771818362891353073179838706450694144000
• The square root of 642823640390640640 is 801762833.0065198527
• The cube root of 642823640390640640 is 863039.3810588173

Scales and comparisons

• 642,823,640,390,640,640 seconds is equal to 20,439,803,380 years, 18 weeks, 1 day, 5 hours, 30 minutes, 40 seconds.
• To count from 1 to 642,823,640,390,640,640 would take you about sixty-one billion, three hundred nineteen million, four hundred ten thousand, one 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 642823640390640640 cubic inches would be around 71919.9 feet tall.

Recreational maths with 642823640390640640

• 642823640390640640 backwards is 046046093046328246
• The number of decimal digits it has is: 18
• The sum of 642823640390640640's digits is 67
• More coming soon!