81116672000

Names of 81116672000

• Cardinal: 81116672000 can be written as Eighty-one billion, one hundred sixteen million, six hundred seventy-two thousand.

Scientific notation

• Scientific notation: 8.1116672 × 10¹⁰

Factors of 81116672000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 1768

Divisors of 81116672000

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 25 26 28 32 35 40 50 52 56 64 65 70 80 91 100 104 112 125 128 130 140 160 175 182 200 208 224 250 256 260 280 320 325 350 364 400 416 448 455 500 512 520 560 640 650 700 728 800 832 875 896 910 1000 1024 1040 1120 1280 1300 1400 1456 1600 1625 1664 1741 1750 1792 1820 2000 2048 2080 2240 2275 2560 2600 2800 2912 3200 3250 3328 3482 3500 3584 3640 4000 4096 4160 4480 4550 5120 5200 5600 5824 6400 6500 6656 6964 7000 7168 7280 8000 8320 8705 8960 9100 10240 10400 11200 11375 11648 12187 12800 13000 13312 13928 14000 14336 14560 16000 16640 17410 17920 18200 20480 20800 22400 22633 22750 23296 24374 25600 26000 26624 27856 28000 28672 29120 32000 33280 34820 35840 36400 41600 43525 44800 45266 45500 46592 48748 51200 52000 53248 55712 56000 58240 60935 64000 66560 69640 71680 72800 83200 87050 89600 90532 91000 93184 97496 102400 104000 111424 112000 113165 116480 121870 128000 133120 139280 143360 145600 158431 166400 174100 179200 181064 182000 186368 194992 208000 217625 222848 224000 226330 232960 243740 256000 266240 278560 291200 304675 316862 332800 348200 358400 362128 364000 372736 389984 416000 435250 445696 448000 452660 465920 487480 512000 557120 565825 582400 609350 633724 665600 696400 716800 724256 728000 779968 792155 832000 870500 891392 896000 905320 931840 974960 1114240 1131650 1164800 1218700 1267448 1331200 1392800 1448512 1456000 1523375 1559936 1584310 1664000 1741000 1782784 1792000 1810640 1863680 1949920 2228480 2263300 2329600 2437400 2534896 2785600 2829125 2897024 2912000 3046750 3119872 3168620 3328000 3482000 3565568 3584000 3621280 3899840 3960775 4456960 4526600 4659200 4874800 5069792 5571200 5658250 5794048 5824000 6093500 6239744 6337240 6656000 6964000 7131136 7242560 7799680 7921550 8913920 9053200 9318400 9749600 10139584 11142400 11316500 11588096 11648000 12187000 12479488 12674480 13928000 14485120 15599360 15843100 17827840 18106400 19499200 19803875 20279168 22284800 22633000 23176192 23296000 24374000 24958976 25348960 27856000 28970240 31198720 31686200 35655680 36212800 38998400 39607750 40558336 44569600 45266000 46352384 46592000 48748000 49917952 50697920 55712000 57940480 62397440 63372400 72425600 77996800 79215500 81116672 89139200 90532000 92704768 97496000 101395840 111424000 115880960 124794880 126744800 144851200 155993600 158431000 162233344 178278400 181064000 194992000 202791680 222848000 231761920 249589760 253489600 289702400 311987200 316862000 324466688 362128000 389984000 405583360 445696000 463523840 506979200 579404800 623974400 633724000 648933376 724256000 779968000 811166720 891392000 1013958400 1158809600 1247948800 1267448000 1448512000 1559936000 1622333440 2027916800 2317619200 2534896000 2897024000 3119872000 3244666880 4055833600 5069792000 5794048000 6239744000 8111667200 10139584000 11588096000 16223334400 20279168000 40558336000 81116672000
• Sum of all divisors σ(n): 249303110784
• Sum of proper divisors (its aliquot sum) s(n): 168186438784
• 81116672000 is an abundant number, because the sum of its proper divisors (168186438784) is greater than itself. Its abundance is 87069766784

Bases of 81116672000

• Binary: 1001011100010111011100011000000000000₂
• Hexadecimal: 0x12E2EE3000
• Base-36: 119IRSOW

Squares and roots of 81116672000

• 81116672000 squared (81116672000²) is 6579914476355584000000
• 81116672000 cubed (81116672000³) is 533740764366587662696448000000000
• The square root of 81116672000 is 284809.8874688167
• The cube root of 81116672000 is 4328.8251234485

Scales and comparisons

• 81,116,672,000 seconds is equal to 2,579 years, 13 weeks, 3 days, 8 hours, 53 minutes, 20 seconds.
• To count from 1 to 81,116,672,000 would take you about five thousand, one hundred fifty-eight 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 81116672000 cubic inches would be around 360.7 feet tall.

Recreational maths with 81116672000

• 81116672000 backwards is 00027661118
• 81116672000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81116672000's digits is 32
• More coming soon!