81357712200

Names of 81357712200

• Cardinal: 81357712200 can be written as Eighty-one billion, three hundred fifty-seven million, seven hundred twelve thousand, two hundred.

Scientific notation

• Scientific notation: 8.13577122 × 10¹⁰

Factors of 81357712200

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 93

Divisors of 81357712200

• Number of divisors d(n): 396
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 45 50 54 60 72 75 81 83 90 100 108 120 135 150 162 166 180 200 216 225 243 249 270 300 324 332 360 405 415 450 486 498 540 600 648 664 675 729 747 810 830 900 972 996 1080 1215 1245 1350 1458 1494 1620 1660 1800 1944 1992 2025 2075 2187 2241 2430 2490 2700 2916 2988 3240 3320 3645 3735 4050 4150 4374 4482 4860 4980 5400 5832 5976 6075 6225 6561 6723 6889 7290 7470 8100 8300 8748 8964 9720 9960 10935 11205 12150 12450 13122 13446 13778 14580 14940 16200 16600 17496 17928 18225 18675 19683 20169 20667 21870 22410 24300 24900 26244 26892 27556 29160 29880 32805 33615 34445 36450 37350 39366 40338 41334 43740 44820 48600 49800 52488 53784 54675 55112 56025 59049 60507 62001 65610 67230 68890 72900 74700 78732 80676 82668 87480 89640 98415 100845 103335 109350 112050 118098 121014 124002 131220 134460 137780 145800 149400 157464 161352 164025 165336 168075 172225 181521 186003 196830 201690 206670 218700 224100 236196 242028 248004 262440 268920 275560 295245 302535 310005 328050 336150 344450 363042 372006 393660 403380 413340 437400 448200 472392 484056 492075 496008 504225 516675 544563 558009 590490 605070 620010 656100 672300 688900 726084 744012 787320 806760 826680 907605 930015 984150 1008450 1033350 1089126 1116018 1180980 1210140 1240020 1312200 1344600 1377800 1452168 1476225 1488024 1512675 1550025 1633689 1674027 1815210 1860030 1968300 2016900 2066700 2178252 2232036 2361960 2420280 2480040 2722815 2790045 2952450 3025350 3100050 3267378 3348054 3630420 3720060 3936600 4033800 4133400 4356504 4464072 4538025 4650075 4901067 5022081 5445630 5580090 5904900 6050700 6200100 6534756 6696108 7260840 7440120 8168445 8370135 9076050 9300150 9802134 10044162 10891260 11160180 11809800 12101400 12400200 13069512 13392216 13614075 13950225 15066243 16336890 16740270 18152100 18600300 19604268 20088324 21782520 22320360 24505335 25110405 27228150 27900450 30132486 32673780 33480540 36304200 37200600 39208536 40176648 40842225 41850675 45198729 49010670 50220810 54456300 55800900 60264972 65347560 66961080 75331215 81684450 83701350 90397458 98021340 100441620 108912600 111601800 120529944 122526675 125552025 135596187 150662430 163368900 167402700 180794916 196042680 200883240 225993645 245053350 251104050 271192374 301324860 326737800 334805400 361589832 376656075 406788561 451987290 490106700 502208100 542384748 602649720 677980935 753312150 813577122 903974580 980213400 1004416200 1084769496 1129968225 1355961870 1506624300 1627154244 1807949160 2033942805 2259936450 2711923740 3013248600 3254308488 3389904675 4067885610 4519872900 5423847480 6779809350 8135771220 9039745800 10169714025 13559618700 16271542440 20339428050 27119237400 40678856100 81357712200
• Sum of all divisors σ(n): 287193080985
• Sum of proper divisors (its aliquot sum) s(n): 205835368785
• 81357712200 is an abundant number, because the sum of its proper divisors (205835368785) is greater than itself. Its abundance is 124477656585

Bases of 81357712200

• Binary: 1001011110001010011000010101101001000₂
• Hexadecimal: 0x12F14C2B48
• Base-36: 11DIA4I0

Squares and roots of 81357712200

• 81357712200 squared (81357712200²) is 6619077334418028840000
• 81357712200 cubed (81357712200³) is 538512988803125144856019848000000
• The square root of 81357712200 is 285232.7333950295
• The cube root of 81357712200 is 4333.1086204315

Scales and comparisons

• 81,357,712,200 seconds is equal to 2,586 years, 48 weeks, 4 hours, 30 minutes.
• To count from 1 to 81,357,712,200 would take you about five thousand, one hundred seventy-three 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 81357712200 cubic inches would be around 361.1 feet tall.

Recreational maths with 81357712200

• 81357712200 backwards is 00221775318
• 81357712200 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81357712200's digits is 36
• More coming soon!