668943654400

Names of 668943654400

• Cardinal: 668943654400 can be written as Six hundred sixty-eight billion, nine hundred forty-three million, six hundred fifty-four thousand, four hundred.

Scientific notation

• Scientific notation: 6.689436544 × 10¹¹

Factors of 668943654400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 458

Divisors of 668943654400

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 50 56 64 70 80 100 112 128 140 160 163 175 200 224 256 280 281 320 326 350 400 448 512 560 562 640 652 700 800 815 896 1120 1124 1141 1280 1304 1400 1405 1600 1630 1792 1967 2240 2248 2282 2560 2608 2800 2810 3200 3260 3584 3934 4075 4480 4496 4564 5216 5600 5620 5705 6400 6520 7025 7868 8150 8960 8992 9128 9835 10432 11200 11240 11410 12800 13040 14050 15736 16300 17920 17984 18256 19670 20864 22400 22480 22820 26080 26569 28100 28525 31472 32600 35968 36512 39340 41728 44800 44960 45640 45803 49175 52160 53138 56200 57050 62944 65200 71936 73024 78680 83456 89600 89920 91280 91606 98350 104320 106276 112400 114100 125888 130400 132845 143872 146048 157360 179840 182560 183212 185983 196700 208640 212552 224800 228200 229015 251776 260800 265690 292096 314720 320621 359680 365120 366424 371966 393400 417280 425104 449600 456400 458030 503552 521600 531380 584192 629440 641242 664225 719360 730240 732848 743932 786800 850208 899200 912800 916060 929915 1007104 1043200 1062760 1145075 1258880 1282484 1328450 1460480 1465696 1487864 1573600 1603105 1700416 1798400 1825600 1832120 1859830 2086400 2125520 2290150 2517760 2564968 2656900 2920960 2931392 2975728 3147200 3206210 3400832 3596800 3651200 3664240 3719660 4251040 4580300 4649575 5035520 5129936 5313800 5862784 5951456 6294400 6412420 6801664 7302400 7328480 7439320 7465889 8015525 8502080 9160600 9299150 10259872 10627600 11725568 11902912 12588800 12824840 13603328 14604800 14656960 14878640 14931778 16031050 17004160 18321200 18598300 20519744 21255200 23451136 23805824 25177600 25649680 29313920 29757280 29863556 32062100 34008320 36642400 37196600 37329445 41039488 42510400 47611648 51299360 52261223 58627840 59514560 59727112 64124200 68016640 73284800 74393200 74658890 82078976 85020800 95223296 102598720 104522446 117255680 119029120 119454224 128248400 146569600 148786400 149317780 164157952 170041600 186647225 205197440 209044892 238058240 238908448 256496800 261306115 293139200 297572800 298635560 340083200 373294450 410394880 418089784 476116480 477816896 512993600 522612230 586278400 595145600 597271120 746588900 820789760 836179568 955633792 1025987200 1045224460 1190291200 1194542240 1306530575 1493177800 1672359136 1911267584 2051974400 2090448920 2380582400 2389084480 2613061150 2986355600 3344718272 3822535168 4103948800 4180897840 4778168960 5226122300 5972711200 6689436544 8361795680 9556337920 10452244600 11945422400 13378873088 16723591360 19112675840 20904489200 23890844800 26757746176 33447182720 41808978400 47781689600 66894365440 83617956800 95563379200 133788730880 167235913600 334471827200 668943654400
• Sum of all divisors σ(n): 1912599867024
• Sum of proper divisors (its aliquot sum) s(n): 1243656212624
• 668943654400 is an abundant number, because the sum of its proper divisors (1243656212624) is greater than itself. Its abundance is 574712558224

Bases of 668943654400

• Binary: 1001101111000000001001100001111000000000₂
• Hexadecimal: 0x9BC0261E00
• Base-36: 8JB3S35S

Squares and roots of 668943654400

• 668943654400 squared (668943654400²) is 447485612762026639360000
• 668943654400 cubed (668943654400³) is 299342661092453377683629277184000000
• The square root of 668943654400 is 817889.7568743601
• The cube root of 668943654400 is 8745.7390057381

Scales and comparisons

• 668,943,654,400 seconds is equal to 21,270 years, 17 weeks, 4 days, 9 hours, 46 minutes, 40 seconds.
• To count from 1 to 668,943,654,400 would take you about forty-two thousand, five hundred forty 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 668943654400 cubic inches would be around 728.8 feet tall.

Recreational maths with 668943654400

• 668943654400 backwards is 004456349866
• The number of decimal digits it has is: 12
• The sum of 668943654400's digits is 55
• More coming soon!