81929318016

Names of 81929318016

• Cardinal: 81929318016 can be written as Eighty-one billion, nine hundred twenty-nine million, three hundred eighteen thousand and sixteen.

Scientific notation

• Scientific notation: 8.1929318016 × 10¹⁰

Factors of 81929318016

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 145

Divisors of 81929318016

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 17 21 24 26 28 32 34 39 42 48 51 52 56 64 68 78 84 91 96 102 103 104 112 119 128 136 156 168 169 182 192 204 206 208 221 224 238 272 273 309 312 336 338 357 364 384 408 412 416 442 448 476 507 544 546 618 624 663 672 676 714 721 728 816 824 832 884 896 952 1014 1088 1092 1183 1236 1248 1326 1339 1344 1352 1428 1442 1456 1547 1632 1648 1664 1751 1768 1904 2028 2163 2176 2184 2366 2472 2496 2652 2678 2688 2704 2856 2873 2884 2912 3094 3264 3296 3502 3536 3549 3808 4017 4056 4326 4368 4641 4732 4944 4992 5253 5304 5356 5408 5712 5746 5768 5824 6188 6528 6592 7004 7072 7098 7616 8034 8112 8619 8652 8736 9282 9373 9464 9888 10506 10608 10609 10712 10816 11424 11492 11536 11648 12257 12376 13184 14008 14144 14196 15232 16068 16224 17238 17304 17407 17472 18564 18746 18928 19776 20111 21012 21216 21218 21424 21632 22763 22848 22984 23072 24514 24752 28016 28119 28288 28392 31827 32136 32448 34476 34608 34814 34944 36771 37128 37492 37856 39552 40222 42024 42432 42436 42848 45526 45696 45968 46144 49028 49504 52221 56032 56238 56784 60333 63654 64272 64896 68289 68952 69216 69628 73542 74256 74263 74984 75712 80444 84048 84864 84872 85696 91052 91936 92288 98056 99008 104442 112064 112476 113568 120666 121849 127308 128544 136578 137904 137917 138432 139256 147084 148512 148526 149968 151424 159341 160888 168096 169744 171392 180353 182104 183872 196112 198016 208884 222789 224128 224952 227136 241332 243698 254616 257088 273156 275808 275834 276864 278512 294168 295919 297024 297052 299936 318682 321776 336192 339488 360706 364208 365547 367744 392224 413751 417768 445578 449904 454272 478023 482664 487396 509232 514176 541059 546312 551616 551668 557024 588336 591838 594048 594104 599872 637364 643552 672384 678976 721412 728416 731094 784448 827502 835536 887757 891156 899808 956046 965328 965419 974792 1018464 1082118 1092624 1103232 1103336 1114048 1176672 1183676 1188208 1199744 1262471 1274728 1287104 1357952 1442824 1456832 1462188 1568896 1655004 1671072 1775514 1782312 1792921 1799616 1912092 1930656 1930838 1949584 2036928 2071433 2164236 2185248 2206672 2228096 2344589 2353344 2367352 2376416 2524942 2549456 2574208 2885648 2896257 2913664 2924376 3310008 3342144 3551028 3564624 3585842 3599232 3787413 3824184 3861312 3861676 3899168 4073856 4142866 4328472 4370496 4413344 4689178 4706688 4734704 4752832 5049884 5098912 5378763 5771296 5792514 5848752 6214299 6620016 6684288 7033767 7102056 7129248 7171684 7574826 7648368 7722624 7723352 7798336 8285732 8656944 8740992 8826688 9378356 9469408 9505664 10099768 10197824 10757526 11542592 11585028 11697504 12428598 12550447 13240032 14067534 14204112 14258496 14343368 15149652 15296736 15446704 15596672 16412123 16571464 17313888 17653376 18756712 18938816 20199536 20395648 21515052 23085184 23170056 23395008 24857196 25100894 26480064 28135068 28408224 28516992 28686736 30299304 30479657 30593472 30893408 32824246 33142928 34627776 37513424 37651341 37877632 40399072 43030104 46340112 46790016 49236369 49714392 50201788 52960128 56270136 56816448 57373472 60598608 60959314 61186944 61786816 65648492 66285856 69255552 75026848 75302682 80798144 86060208 91438971 92680224 98472738 99428784 100403576 112540272 113632896 114746944 121197216 121918628 123573632 131296984 132571712 150053696 150605364 161596288 172120416 182877942 185360448 196945476 198857568 200807152 213357599 225080544 229493888 242394432 243837256 262593968 265143424 300107392 301210728 344240832 365755884 370720896 393890952 397715136 401614304 426715198 450161088 484788864 487674512 525187936 602421456 640072797 688481664 731511768 787781904 795430272 803228608 853430396 900322176 975349024 1050375872 1204842912 1280145594 1463023536 1575563808 1606457216 1706860792 1950698048 2100751744 2409685824 2560291188 2926047072 3151127616 3413721584 3901396096 4819371648 5120582376 5852094144 6302255232 6827443168 10241164752 11704188288 13654886336 20482329504 27309772672 40964659008 81929318016
• Sum of all divisors σ(n): 287955155520
• Sum of proper divisors (its aliquot sum) s(n): 206025837504
• 81929318016 is an abundant number, because the sum of its proper divisors (206025837504) is greater than itself. Its abundance is 124096519488

Bases of 81929318016

• Binary: 1001100010011010111100010111010000000₂
• Hexadecimal: 0x13135E2E80
• Base-36: 11MYLMDC

Squares and roots of 81929318016

• 81929318016 squared (81929318016²) is 6712413150566862176256
• 81929318016 cubed (81929318016³) is 549943431667572941909719668228096
• The square root of 81929318016 is 286232.9785611713
• The cube root of 81929318016 is 4343.2328481915

Scales and comparisons

• 81,929,318,016 seconds is equal to 2,605 years, 5 weeks, 23 hours, 53 minutes, 36 seconds.
• To count from 1 to 81,929,318,016 would take you about five thousand, two hundred ten 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 81929318016 cubic inches would be around 361.9 feet tall.

Recreational maths with 81929318016

• 81929318016 backwards is 61081392918
• 81929318016 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81929318016's digits is 48
• More coming soon!