668649631016640064

Names of 668649631016640064

• Cardinal: 668649631016640064 can be written as Six hundred sixty-eight quadrillion, six hundred forty-nine trillion, six hundred thirty-one billion, sixteen million, six hundred forty thousand and sixty-four.

Scientific notation

• Scientific notation: 6.68649631016640064 × 10¹⁷

Factors of 668649631016640064

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 489093

Divisors of 668649631016640064

• Number of divisors d(n): 189
• Complete list of divisors:
  1 2 4 8 11 16 19 22 32 38 44 64 76 88 121 152 176 209 242 304 352 361 418 484 608 704 722 836 968 1216 1444 1672 1936 2299 2888 3344 3872 3971 4598 5776 6688 7744 7942 9196 11552 13376 15884 18392 23104 31768 36784 43681 63536 73568 87362 127072 147136 174724 254144 349448 489061 698896 978122 1397792 1956244 2795584 3912488 5379671 7824976 9292159 10759342 15649952 18584318 21518684 31299904 37168636 43037368 59176381 74337272 86074736 102213749 118352762 148674544 172149472 176551021 204427498 236705524 297349088 344298944 353102042 408854996 473411048 594698176 706204084 817709992 946822096 1124351239 1412408168 1635419984 1893644192 1942061231 2248702478 2824816336 3270839968 3787288384 3884122462 4497404956 5649632672 6541679936 7768244924 8994809912 11299265344 15536489848 17989619824 21362673541 31072979696 35979239648 42725347082 62145959392 71958479296 85450694164 124291918784 170901388328 239180661721 341802776656 478361323442 683605553312 956722646884 1367211106624 1913445293768 2630987278931 3826890587536 4544432572699 5261974557862 7653781175072 9088865145398 10523949115724 15307562350144 18177730290796 21047898231448 28940860068241 36355460581592 42095796462896 49988758299689 57881720136482 72710921163184 84191592925792 86344218881281 99977516599378 115763440272964 145421842326368 168383185851584 172688437762562 199955033198756 231526880545928 290843684652736 345376875525124 399910066397512 463053761091856 549876341296579 690753751050248 799820132795024 926107522183712 949786407694091 1099752682593158 1381507502100496 1599640265590048 1852215044367424 1899572815388182 2199505365186316 2763015004200992 3199280531180096 3799145630776364 4399010730372632 5526030008401984 7598291261552728 8798021460745264 10447650484635001 15196582523105456 17596042921490528 20895300969270002 30393165046210912 35192085842981056 41790601938540004 60786330092421824 83581203877080008 167162407754160016 334324815508320032 668649631016640064
• Sum of all divisors σ(n): 1539243359610623793
• Sum of proper divisors (its aliquot sum) s(n): 870593728593983729
• 668649631016640064 is an abundant number, because the sum of its proper divisors (870593728593983729) is greater than itself. Its abundance is 201944097577343665

Bases of 668649631016640064

• Binary: 100101000111100001010100101111110111111100010101111001000000₂
• Hexadecimal: 0x947854BF7F15E40
• Base-36: 52VSIFWTFPZ4

Squares and roots of 668649631016640064

• 668649631016640064 squared (668649631016640064²) is 447092329058688906307109659729924096
• 668649631016640064 cubed (668649631016640064³) is 298948120855462559515488089811989614841332735672582144
• 668649631016640064 is a perfect square number. Its square root is 817709992
• The cube root of 668649631016640064 is 874445.7468499373

Scales and comparisons

• 668,649,631,016,640,064 seconds is equal to 21,260,989,997 years, 11 weeks, 3 days, 21 hours, 21 minutes, 4 seconds.
• To count from 1 to 668,649,631,016,640,064 would take you about sixty-three billion, seven hundred eighty-two million, nine hundred sixty-nine thousand, nine hundred ninety-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 668649631016640064 cubic inches would be around 72870.5 feet tall.

Recreational maths with 668649631016640064

• 668649631016640064 backwards is 460046610136946866
• 668649631016640064 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 668649631016640064's digits is 76
• More coming soon!