21155948550

Names of 21155948550

• Cardinal: 21155948550 can be written as Twenty-one billion, one hundred fifty-five million, nine hundred forty-eight thousand, five hundred fifty.

Scientific notation

• Scientific notation: 2.115594855 × 10¹⁰

Factors of 21155948550

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1921

Divisors of 21155948550

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 5 6 9 10 11 15 18 22 23 25 27 30 33 45 46 50 54 55 66 69 75 81 90 99 110 115 121 135 138 150 162 165 198 207 225 230 242 253 270 275 297 330 345 363 405 414 450 495 506 550 575 594 605 621 675 690 726 759 810 825 891 990 1035 1089 1150 1210 1242 1265 1350 1485 1518 1650 1725 1782 1815 1863 1877 2025 2070 2178 2277 2475 2530 2783 2970 3025 3105 3267 3450 3630 3726 3754 3795 4050 4455 4554 4950 5175 5445 5566 5631 6050 6210 6325 6534 6831 7425 7590 8349 8910 9075 9315 9385 9801 10350 10890 11262 11385 12650 13662 13915 14850 15525 16335 16698 16893 18150 18630 18770 18975 19602 20493 20647 22275 22770 25047 27225 27830 28155 31050 32670 33786 34155 37950 40986 41294 41745 43171 44550 46575 46925 49005 50094 50679 54450 56310 56925 61941 68310 69575 75141 81675 83490 84465 86342 93150 93850 98010 101358 102465 103235 113850 123882 125235 129513 139150 140775 150282 152037 163350 168930 170775 185823 204930 206470 208725 215855 225423 227117 245025 250470 253395 259026 281550 304074 309705 341550 371646 375705 388539 417450 422325 431710 450846 454234 474881 490050 506790 512325 516175 557469 619410 626175 647565 681351 751410 760185 777078 844650 929115 949762 1024650 1032350 1079275 1114938 1127115 1135585 1165617 1252350 1266975 1295130 1362702 1424643 1520370 1548525 1672407 1858230 1878525 1942695 2044053 2158550 2254230 2271170 2331234 2374405 2533950 2787345 2849286 3097050 3237825 3344814 3406755 3496851 3757050 3800925 3885390 4088106 4273929 4645575 4748810 5223691 5574690 5635575 5677925 5828085 6132159 6475650 6813510 6993702 7123215 7601850 8362035 8547858 9291150 9713475 10220265 10447382 11271150 11355850 11656170 11872025 12264318 12821787 13936725 14246430 15671073 16724070 17033775 17484255 18396477 19426950 20440530 21369645 23744050 25643574 26118455 27873450 29140425 30660795 31342146 34067550 34968510 35616075 36792954 38465361 41810175 42739290 47013219 51101325 52236910 58280850 61321590 64108935 71232150 76930722 78355365 83620350 87421275 91982385 94026438 102202650 106848225 128217870 130592275 141039657 153303975 156710730 174842550 183964770 192326805 213696450 235066095 261184550 282079314 306607950 320544675 384653610 391776825 423118971 459911925 470132190 641089350 705198285 783553650 846237942 919823850 961634025 1175330475 1410396570 1923268050 2115594855 2350660950 3525991425 4231189710 7051982850 10577974275 21155948550
• Sum of all divisors σ(n): 67456963728
• Sum of proper divisors (its aliquot sum) s(n): 46301015178
• 21155948550 is an abundant number, because the sum of its proper divisors (46301015178) is greater than itself. Its abundance is 25145066628

Bases of 21155948550

• Binary: 10011101100111111100010100000000110₂
• Hexadecimal: 0x4ECFE2806
• Base-36: 9PVPEDI

Squares and roots of 21155948550

• 21155948550 squared (21155948550²) is 447574159050247102500
• 21155948550 cubed (21155948550³) is 9468855881176544565276576375000
• The square root of 21155948550 is 145450.8458208475
• The cube root of 21155948550 is 2765.7367091907

Scales and comparisons

• 21,155,948,550 seconds is equal to 672 years, 36 weeks, 12 hours, 22 minutes, 30 seconds.
• To count from 1 to 21,155,948,550 would take you about one thousand, three hundred forty-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 21155948550 cubic inches would be around 230.5 feet tall.

Recreational maths with 21155948550

• 21155948550 backwards is 05584955112
• 21155948550 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21155948550's digits is 45
• More coming soon!