81083312128

Names of 81083312128

• Cardinal: 81083312128 can be written as Eighty-one billion, eighty-three million, three hundred twelve thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 8.1083312128 × 10¹⁰

Factors of 81083312128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 705

Divisors of 81083312128

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 91 98 104 112 128 169 182 196 208 224 256 338 343 364 392 416 448 512 637 676 683 686 728 784 832 896 1024 1183 1274 1352 1366 1372 1456 1568 1664 1792 2048 2366 2548 2704 2732 2744 2912 3136 3328 3584 4459 4732 4781 5096 5408 5464 5488 5824 6272 6656 7168 8281 8879 8918 9464 9562 10192 10816 10928 10976 11648 12544 13312 14336 16562 17758 17836 18928 19124 20384 21632 21856 21952 23296 25088 26624 33124 33467 35516 35672 37856 38248 40768 43264 43712 43904 46592 50176 57967 62153 66248 66934 71032 71344 75712 76496 81536 86528 87424 87808 93184 100352 115427 115934 124306 132496 133868 142064 142688 151424 152992 163072 173056 174848 175616 186368 230854 231868 234269 248612 264992 267736 284128 285376 302848 305984 326144 346112 349696 351232 435071 461708 463736 468538 497224 529984 535472 568256 570752 605696 611968 652288 699392 702464 807989 870142 923416 927472 937076 994448 1059968 1070944 1136512 1141504 1211392 1223936 1304576 1398784 1615978 1740284 1846832 1854944 1874152 1988896 2119936 2141888 2273024 2283008 2422784 2447872 3045497 3231956 3480568 3693664 3709888 3748304 3977792 4239872 4283776 4546048 4566016 4895744 5655923 6090994 6463912 6961136 7387328 7419776 7496608 7955584 8479744 8567552 9092096 9132032 9791488 11311846 12181988 12927824 13922272 14774656 14839552 14993216 15911168 16959488 17135104 18184192 22623692 24363976 25855648 27844544 29549312 29679104 29986432 31822336 34270208 39591461 45247384 48727952 51711296 55689088 59098624 59358208 59972864 63644672 68540416 79182922 90494768 97455904 103422592 111378176 118197248 118716416 119945728 127289344 158365844 180989536 194911808 206845184 222756352 236394496 239891456 316731688 361979072 389823616 413690368 445512704 479782912 633463376 723958144 779647232 827380736 891025408 1266926752 1447916288 1559294464 1654761472 2533853504 2895832576 3118588928 5067707008 5791665152 6237177856 10135414016 11583330304 20270828032 40541656064 81083312128
• Sum of all divisors σ(n): 205031736000
• Sum of proper divisors (its aliquot sum) s(n): 123948423872
• 81083312128 is an abundant number, because the sum of its proper divisors (123948423872) is greater than itself. Its abundance is 42865111744

Bases of 81083312128

• Binary: 1001011100000111100010010100000000000₂
• Hexadecimal: 0x12E0F12800
• Base-36: 118YWS1S

Squares and roots of 81083312128

• 81083312128 squared (81083312128²) is 6574503505646671888384
• 81083312128 cubed (81083312128³) is 533082519834979307210243049521152
• The square root of 81083312128 is 284751.3162884413
• The cube root of 81083312128 is 4328.2316209069

Scales and comparisons

• 81,083,312,128 seconds is equal to 2,578 years, 10 weeks, 2 days, 6 hours, 15 minutes, 28 seconds.
• To count from 1 to 81,083,312,128 would take you about five thousand, one hundred fifty-six 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 81083312128 cubic inches would be around 360.7 feet tall.

Recreational maths with 81083312128

• 81083312128 backwards is 82121338018
• The number of decimal digits it has is: 11
• The sum of 81083312128's digits is 37
• More coming soon!