81678642000

Names of 81678642000

• Cardinal: 81678642000 can be written as Eighty-one billion, six hundred seventy-eight million, six hundred forty-two thousand.

Scientific notation

• Scientific notation: 8.1678642 × 10¹⁰

Factors of 81678642000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 19599

Divisors of 81678642000

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 25 30 34 40 41 48 50 51 60 68 75 80 82 85 100 102 120 123 125 136 150 164 170 200 204 205 240 246 250 255 272 300 328 340 375 400 408 410 425 492 500 510 600 615 656 680 697 750 816 820 850 984 1000 1020 1025 1200 1230 1275 1360 1394 1500 1640 1700 1968 2000 2040 2050 2091 2125 2460 2550 2788 3000 3075 3280 3400 3485 4080 4100 4182 4250 4920 5100 5125 5576 6000 6150 6375 6800 6970 8200 8364 8500 9840 10200 10250 10455 11152 12300 12750 13940 15375 16400 16728 17000 17425 19531 20400 20500 20910 24600 25500 27880 30750 33456 34000 34850 39062 41000 41820 49200 51000 52275 55760 58593 61500 69700 78124 82000 83640 87125 97655 102000 104550 117186 123000 139400 156248 167280 174250 195310 209100 234372 246000 261375 278800 292965 312496 332027 348500 390620 418200 468744 488275 522750 585930 664054 697000 781240 800771 836400 937488 976550 996081 1045500 1171860 1328108 1394000 1464825 1562480 1601542 1660135 1953100 1992162 2091000 2343720 2402313 2441375 2656216 2929650 3203084 3320270 3906200 3984324 4003855 4182000 4687440 4804626 4882750 4980405 5312432 5859300 6406168 6640540 7324125 7812400 7968648 8007710 8300675 9609252 9765500 9960810 11718600 12011565 12812336 13281080 13613107 14648250 15937296 16015420 16601350 19218504 19531000 19921620 20019275 23437200 24023130 24902025 26562160 27226214 29296500 32030840 33202700 38437008 39062000 39843240 40038550 40839321 41503375 48046260 49804050 54452428 58593000 60057825 64061680 66405400 68065535 79686480 80077100 81678642 83006750 96092520 99608100 100096375 108904856 117186000 120115650 124510125 132810800 136131070 160154200 163357284 166013500 192185040 199216200 200192750 204196605 217809712 240231300 249020250 272262140 300289125 320308400 326714568 332027000 340327675 398432400 400385500 408393210 480462600 498040500 544524280 600578250 653429136 664054000 680655350 800771000 816786420 960925200 996081000 1020983025 1089048560 1201156500 1361310700 1601542000 1633572840 1701638375 1992162000 2041966050 2402313000 2722621400 3267145680 3403276750 4083932100 4804626000 5104915125 5445242800 6806553500 8167864200 10209830250 13613107000 16335728400 20419660500 27226214000 40839321000 81678642000
• Sum of all divisors σ(n): 285637218048
• Sum of proper divisors (its aliquot sum) s(n): 203958576048
• 81678642000 is an abundant number, because the sum of its proper divisors (203958576048) is greater than itself. Its abundance is 122279934048

Bases of 81678642000

• Binary: 1001100000100011011010010101101010000₂
• Hexadecimal: 0x13046D2B50
• Base-36: 11ITCRIO

Squares and roots of 81678642000

• 81678642000 squared (81678642000²) is 6671400558964164000000
• 81678642000 cubed (81678642000³) is 544910937894233842185288000000000
• The square root of 81678642000 is 285794.7550253503
• The cube root of 81678642000 is 4338.7987147167

Scales and comparisons

• 81,678,642,000 seconds is equal to 2,597 years, 6 weeks, 4 days, 15 hours, 40 minutes.
• To count from 1 to 81,678,642,000 would take you about five thousand, one hundred ninety-four 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 81678642000 cubic inches would be around 361.6 feet tall.

Recreational maths with 81678642000

• 81678642000 backwards is 00024687618
• The number of decimal digits it has is: 11
• The sum of 81678642000's digits is 42
• More coming soon!