66438890000

Names of 66438890000

• Cardinal: 66438890000 can be written as Sixty-six billion, four hundred thirty-eight million, eight hundred ninety thousand.

Scientific notation

• Scientific notation: 6.643889 × 10¹⁰

Factors of 66438890000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1863

Divisors of 66438890000

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 25 28 31 34 35 40 50 56 62 68 70 80 85 100 112 119 124 125 136 140 155 170 175 200 217 238 248 250 272 280 310 340 350 400 425 434 476 496 500 527 560 595 620 625 680 700 775 850 868 875 952 1000 1054 1085 1190 1240 1250 1360 1400 1550 1700 1736 1750 1801 1904 2000 2108 2125 2170 2380 2480 2500 2635 2800 2975 3100 3400 3472 3500 3602 3689 3875 4216 4250 4340 4375 4760 5000 5270 5425 5950 6200 6800 7000 7204 7378 7750 8432 8500 8680 8750 9005 9520 10000 10540 10625 10850 11900 12400 12607 13175 14000 14408 14756 14875 15500 17000 17360 17500 18010 18445 19375 21080 21250 21700 23800 25214 26350 27125 28816 29512 29750 30617 31000 34000 35000 36020 36890 38750 42160 42500 43400 45025 47600 50428 52700 54250 55831 59024 59500 61234 62000 63035 65875 70000 72040 73780 74375 77500 85000 86800 90050 92225 100856 105400 108500 111662 119000 122468 126070 131750 135625 144080 147560 148750 153085 155000 170000 180100 184450 201712 210800 214319 217000 223324 225125 238000 244936 252140 263500 271250 279155 295120 297500 306170 310000 315175 329375 360200 368900 390817 428638 434000 446648 450250 461125 489872 504280 527000 542500 558310 595000 612340 630350 658750 720400 737800 765425 781634 857276 893296 900500 922250 949127 1008560 1054000 1071595 1085000 1116620 1125625 1190000 1224680 1260700 1317500 1395775 1475600 1530850 1563268 1575875 1714552 1801000 1844500 1898254 1954085 2143190 2170000 2233240 2251250 2305625 2449360 2521400 2635000 2791550 3061700 3126536 3151750 3429104 3602000 3689000 3796508 3827125 3908170 4286380 4466480 4502500 4611250 4745635 5042800 5270000 5357975 5583100 6123400 6253072 6303500 6643889 6978875 7378000 7593016 7654250 7816340 7879375 8572760 9005000 9222500 9491270 9770425 10715950 11166200 12246800 12607000 13287778 13957750 15186032 15308500 15632680 15758750 17145520 18010000 18445000 18982540 19135625 19540850 21431900 22332400 23728175 25214000 26575556 26789875 27915500 30617000 31265360 31517500 33219445 34894375 36890000 37965080 38271250 39081700 42863800 47456350 48852125 53151112 53579750 55831000 61234000 63035000 66438890 69788750 75930160 76542500 78163400 85727600 94912700 97704250 106302224 107159500 111662000 118640875 126070000 132877780 133949375 139577500 153085000 156326800 166097225 189825400 195408500 214319000 237281750 244260625 265755560 267898750 279155000 306170000 332194450 379650800 390817000 428638000 474563500 488521250 531511120 535797500 558310000 593204375 664388900 781634000 830486125 949127000 977042500 1071595000 1186408750 1328777800 1660972250 1898254000 1954085000 2143190000 2372817500 2657555600 3321944500 3908170000 4152430625 4745635000 6643889000 8304861250 9491270000 13287778000 16609722500 33219445000 66438890000
• Sum of all divisors σ(n): 201038846976
• Sum of proper divisors (its aliquot sum) s(n): 134599956976
• 66438890000 is an abundant number, because the sum of its proper divisors (134599956976) is greater than itself. Its abundance is 68161066976

Bases of 66438890000

• Binary: 111101111000000100010000001000010000₂
• Hexadecimal: 0xF78110210
• Base-36: UIRZZM8

Squares and roots of 66438890000

• 66438890000 squared (66438890000²) is 4414126104432100000000
• 66438890000 cubed (66438890000³) is 293269638698492804369000000000000
• The square root of 66438890000 is 257757.4247233239
• The cube root of 66438890000 is 4050.1781154203

Scales and comparisons

• 66,438,890,000 seconds is equal to 2,112 years, 28 weeks, 4 days, 15 hours, 13 minutes, 20 seconds.
• To count from 1 to 66,438,890,000 would take you about four thousand, two hundred twenty-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 66438890000 cubic inches would be around 337.5 feet tall.

Recreational maths with 66438890000

• 66438890000 backwards is 00009883466
• The number of decimal digits it has is: 11
• The sum of 66438890000's digits is 44
• More coming soon!