81372170000

Names of 81372170000

• Cardinal: 81372170000 can be written as Eighty-one billion, three hundred seventy-two million, one hundred seventy thousand.

Scientific notation

• Scientific notation: 8.137217 × 10¹⁰

Factors of 81372170000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 327

Divisors of 81372170000

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 25 40 44 50 55 61 67 80 88 100 110 122 125 134 176 181 200 220 244 250 268 275 305 335 362 400 440 488 500 536 550 610 625 670 671 724 737 880 905 976 1000 1072 1100 1220 1250 1340 1342 1375 1448 1474 1525 1675 1810 1991 2000 2200 2440 2500 2680 2684 2750 2896 2948 3050 3350 3355 3620 3685 3982 4087 4400 4525 4880 5000 5360 5368 5500 5896 6100 6700 6710 6875 7240 7370 7625 7964 8174 8375 9050 9955 10000 10736 11000 11041 11792 12127 12200 13400 13420 13750 14480 14740 15250 15928 16348 16750 16775 18100 18425 19910 20435 22000 22082 22625 24254 24400 26800 26840 27500 29480 30500 31856 32696 33500 33550 36200 36850 38125 39820 40870 41875 44164 44957 45250 48508 49775 53680 55000 55205 58960 60635 61000 65392 67000 67100 72400 73700 76250 79640 81740 83750 83875 88328 89914 90500 92125 97016 99550 102175 110000 110410 113125 121270 121451 122000 133397 134000 134200 147400 152500 159280 163480 167500 167750 176656 179828 181000 184250 194032 199100 204350 220820 224785 226250 242540 242902 248875 266794 268400 276025 294800 303175 305000 326960 335000 335500 359656 362000 368500 398200 408700 419375 441640 449570 452500 460625 485080 485804 497750 510875 533588 552050 606350 607255 610000 666985 670000 671000 719312 737000 739747 796400 817400 838750 883280 899140 905000 921250 970160 971608 995500 1021750 1067176 1104100 1123925 1212700 1214510 1244375 1333970 1342000 1380125 1474000 1479494 1515875 1634800 1677500 1798280 1810000 1842500 1943216 1991000 2043500 2134352 2208200 2247850 2425400 2429020 2488750 2554375 2667940 2760250 2958988 3031750 3036275 3334925 3355000 3596560 3685000 3698735 3982000 4087000 4416400 4495700 4850800 4858040 4977500 5108750 5335880 5520500 5619625 5917976 6063500 6072550 6669850 6710000 6900625 7370000 7397470 7579375 8137217 8174000 8991400 9716080 9955000 10217500 10671760 11041000 11239250 11835952 12127000 12145100 13339700 13801250 14794940 15158750 15181375 16274434 16674625 17982800 18493675 19910000 20435000 22082000 22478500 24254000 24290200 26679400 27602500 28098125 29589880 30317500 30362750 32548868 33349250 36987350 40686085 40870000 44957000 48580400 53358800 55205000 56196250 59179760 60635000 60725500 65097736 66698500 73974700 75906875 81372170 83373125 89914000 92468375 110410000 112392500 121270000 121451000 130195472 133397000 147949400 151813750 162744340 166746250 184936750 203430425 224785000 242902000 266794000 295898800 303627500 325488680 333492500 369873500 406860850 449570000 462341875 607255000 650977360 666985000 739747000 813721700 924683750 1017152125 1214510000 1333970000 1479494000 1627443400 1849367500 2034304250 3254886800 3698735000 4068608500 5085760625 7397470000 8137217000 10171521250 16274434000 20343042500 40686085000 81372170000
• Sum of all divisors σ(n): 222928689984
• Sum of proper divisors (its aliquot sum) s(n): 141556519984
• 81372170000 is an abundant number, because the sum of its proper divisors (141556519984) is greater than itself. Its abundance is 60184349984

Bases of 81372170000

• Binary: 1001011110010001010001100011100010000₂
• Hexadecimal: 0x12F228C710
• Base-36: 11DQW07K

Squares and roots of 81372170000

• 81372170000 squared (81372170000²) is 6621430050508900000000
• 81372170000 cubed (81372170000³) is 538800131713118797313000000000000
• The square root of 81372170000 is 285258.0761345767
• The cube root of 81372170000 is 4333.3652791859

Scales and comparisons

• 81,372,170,000 seconds is equal to 2,587 years, 19 weeks, 6 days, 12 hours, 33 minutes, 20 seconds.
• To count from 1 to 81,372,170,000 would take you about five thousand, one hundred seventy-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 81372170000 cubic inches would be around 361.1 feet tall.

Recreational maths with 81372170000

• 81372170000 backwards is 00007127318
• The number of decimal digits it has is: 11
• The sum of 81372170000's digits is 29
• More coming soon!