81880388616

Names of 81880388616

• Cardinal: 81880388616 can be written as Eighty-one billion, eight hundred eighty million, three hundred eighty-eight thousand, six hundred sixteen.

Scientific notation

• Scientific notation: 8.1880388616 × 10¹⁰

Factors of 81880388616

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 221

Divisors of 81880388616

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 8 12 13 17 24 26 34 39 47 51 52 68 78 94 102 104 136 139 141 156 188 204 221 278 282 289 312 376 408 417 442 556 564 578 611 663 799 834 867 884 1112 1128 1156 1222 1326 1598 1668 1734 1768 1807 1833 2312 2363 2397 2444 2652 3196 3336 3468 3614 3666 3757 4726 4794 4888 5304 5421 6392 6533 6936 7089 7228 7332 7514 9452 9588 10387 10842 11271 13066 13583 14178 14456 14664 15028 18904 19176 19321 19599 20774 21684 22542 26132 27166 28356 30056 30719 31161 38642 39198 40171 40749 41548 43368 45084 52264 54332 56712 57963 61438 62322 77284 78396 80342 81498 83096 84929 90168 92157 108664 111061 115926 120513 122876 124644 154568 156792 160684 162996 169858 176579 184314 222122 231852 241026 245752 249288 251173 254787 321368 325992 328457 333183 339716 353158 368628 444244 463704 482052 502346 509574 522223 529737 656914 666366 679432 706316 737256 753519 888488 908087 964104 985371 1004692 1019148 1044446 1059474 1313828 1332732 1412632 1443793 1507038 1566669 1816174 1888037 1970742 2009384 2038296 2088892 2118948 2627656 2665464 2724261 2887586 3014076 3133338 3632348 3776074 3941484 4177784 4237896 4269941 4331379 5448522 5583769 5664111 5775172 6028152 6266676 7264696 7552148 7882968 8539882 8662758 10897044 11167538 11328222 11550344 11805131 12533352 12809823 15104296 15437479 16751307 17079764 17325516 21794088 22335076 22656444 23610262 24544481 25619646 30874958 33502614 34159528 34651032 35415393 44670152 45312888 46312437 47220524 49088962 51239292 61749916 67005228 70830786 72588997 73633443 92624874 94441048 98177924 102478584 123499832 134010456 141661572 145177994 147266886 185249748 196355848 200687227 217766991 262437143 283323144 290355988 294533772 370499496 401374454 435533982 524874286 580711976 589067544 602061681 787311429 802748908 871067964 1049748572 1204123362 1574622858 1605497816 1742135928 2099497144 2408246724 3149245716 3411682859 4816493448 6298491432 6823365718 10235048577 13646731436 20470097154 27293462872 40940194308 81880388616
• Sum of all divisors σ(n): 240892928640
• Sum of proper divisors (its aliquot sum) s(n): 159012540024
• 81880388616 is an abundant number, because the sum of its proper divisors (159012540024) is greater than itself. Its abundance is 77132151408

Bases of 81880388616

• Binary: 1001100010000011100111001010000001000₂
• Hexadecimal: 0x1310739408
• Base-36: 11M5GW7C

Squares and roots of 81880388616

• 81880388616 squared (81880388616²) is 6704398039907182395456
• 81880388616 cubed (81880388616³) is 548958716943948771109531072528896
• The square root of 81880388616 is 286147.4945128821
• The cube root of 81880388616 is 4342.3680617245

Scales and comparisons

• 81,880,388,616 seconds is equal to 2,603 years, 28 weeks, 1 day, 16 hours, 23 minutes, 36 seconds.
• To count from 1 to 81,880,388,616 would take you about five thousand, two hundred seven 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 81880388616 cubic inches would be around 361.9 feet tall.

Recreational maths with 81880388616

• 81880388616 backwards is 61688308818
• The number of decimal digits it has is: 11
• The sum of 81880388616's digits is 57
• More coming soon!