81426975168

Names of 81426975168

• Cardinal: 81426975168 can be written as Eighty-one billion, four hundred twenty-six million, nine hundred seventy-five thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 8.1426975168 × 10¹⁰

Factors of 81426975168

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 115

Divisors of 81426975168

• Number of divisors d(n): 672
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 19 21 22 24 28 32 33 38 42 44 48 56 57 64 66 73 76 77 84 88 96 112 114 121 132 133 146 152 154 168 176 192 209 219 224 228 231 242 264 266 292 304 308 336 352 361 363 399 418 438 448 456 462 484 511 528 532 584 608 616 627 672 704 722 726 798 803 836 847 876 912 924 968 1022 1056 1064 1083 1168 1216 1232 1254 1344 1387 1444 1452 1463 1533 1596 1606 1672 1694 1752 1824 1848 1936 2044 2112 2128 2166 2299 2336 2409 2464 2508 2527 2541 2774 2888 2904 2926 3066 3192 3212 3344 3388 3504 3648 3696 3872 3971 4088 4161 4256 4332 4389 4598 4672 4818 4928 5016 5054 5082 5548 5621 5776 5808 5852 6132 6384 6424 6688 6776 6859 6897 7008 7392 7581 7744 7942 8176 8322 8512 8664 8778 8833 9196 9636 9709 10032 10108 10164 11096 11242 11552 11616 11704 11913 12264 12768 12848 13376 13552 13718 13794 14016 14784 15162 15257 15884 16093 16352 16644 16863 17328 17556 17666 18392 19272 19418 20064 20216 20328 20577 22192 22484 23104 23232 23408 23826 24528 25536 25696 26353 26499 27104 27436 27588 27797 29127 30324 30514 31768 32186 32704 33288 33726 34656 35112 35332 36784 38544 38836 40128 40432 40656 41154 43681 44384 44968 45771 46816 47652 48013 48279 49056 51392 52706 52998 54208 54872 55176 55594 58254 60648 61028 61831 63536 64372 66576 67452 69312 70224 70664 73568 75449 77088 77672 79059 80864 81312 82308 83391 87362 88768 89936 91542 93632 95304 96026 96558 98112 105412 105996 106799 109744 110352 111188 116508 121296 122056 123662 127072 128744 131043 133152 134904 140448 141328 144039 147136 150898 154176 155344 158118 161728 162624 164616 166782 167827 174724 179872 183084 184471 185493 190608 192052 193116 210824 211992 213598 219488 220704 222376 226347 233016 242592 244112 247324 254144 257488 262086 266304 269808 280896 282656 288078 289883 301796 305767 310688 316236 320397 329232 333564 335654 349448 359744 366168 368942 370986 381216 384104 386232 421648 423984 427196 438976 441408 444752 452694 466032 485184 488224 494648 500707 503481 514976 524172 528143 539616 553413 565312 576156 579766 603592 611534 621376 632472 640794 658464 667128 671308 698896 732336 737884 741972 762432 768208 772464 829939 843296 847968 854392 869649 889504 905388 917301 932064 976448 989296 1001414 1006962 1029952 1048344 1056286 1079232 1106826 1152312 1159532 1174789 1207184 1223068 1264944 1281588 1316928 1334256 1342616 1397792 1464672 1475768 1483944 1502121 1536416 1544928 1584429 1659878 1686592 1695936 1708784 1739298 1779008 1810776 1834602 1864128 1978592 2002828 2013924 2029181 2096688 2112572 2213652 2304624 2319064 2349578 2414368 2446136 2489817 2529888 2563176 2668512 2685232 2795584 2929344 2951536 2967888 3004242 3072832 3089856 3168858 3188713 3319756 3417568 3478596 3504949 3524367 3621552 3669204 3957184 4005656 4027848 4058362 4193376 4225144 4427304 4609248 4638128 4699156 4828736 4892272 4979634 5059776 5126352 5337024 5370464 5507777 5809573 5903072 5935776 6008484 6087543 6337716 6377426 6639512 6835136 6957192 7009898 7048734 7243104 7338408 8011312 8055696 8116724 8386752 8450288 8854608 9218496 9276256 9398312 9566139 9784544 9959268 10252704 10514847 10740928 11015554 11619146 11806144 11871552 12016968 12175086 12675432 12754852 13279024 13914384 14019796 14097468 14486208 14676816 16022624 16111392 16233448 16523331 16900576 17428719 17709216 18552512 18796624 19132278 19569088 19918536 20505408 21029694 22031108 22320991 23238292 24033936 24350172 25350864 25509704 26558048 27828768 28039592 28194936 29353632 32045248 32222784 32466896 33046662 33801152 34857438 35418432 37593248 38264556 38554439 39837072 42059388 44062216 44641982 46476584 48067872 48700344 50701728 51019408 53116096 55657536 56079184 56389872 58707264 60585547 64933792 66093324 66962973 69714876 75186496 76529112 77108878 79674144 84118776 88124432 89283964 92953168 96135744 97400688 101403456 102038816 112158368 112779744 115663317 121171094 129867584 132186648 133925946 139429752 153058224 154217756 159348288 168237552 176248864 178567928 181756641 185906336 194801376 204077632 224316736 225559488 231326634 242342188 264373296 267851892 278859504 306116448 308435512 336475104 352497728 357135856 363513282 371812672 389602752 424098829 462653268 484684376 528746592 535703784 557719008 612232896 616871024 672950208 714271712 727026564 848197658 925306536 969368752 1057493184 1071407568 1115438016 1233742048 1272296487 1428543424 1454053128 1696395316 1850613072 1938737504 2142815136 2467484096 2544592974 2908106256 3392790632 3701226144 3877475008 4285630272 5089185948 5816212512 6785581264 7402452288 10178371896 11632425024 13571162528 20356743792 27142325056 40713487584 81426975168
• Sum of all divisors σ(n): 289584709120
• Sum of proper divisors (its aliquot sum) s(n): 208157733952
• 81426975168 is an abundant number, because the sum of its proper divisors (208157733952) is greater than itself. Its abundance is 126730758784

Bases of 81426975168

• Binary: 1001011110101011011010000100111000000₂
• Hexadecimal: 0x12F56D09C0
• Base-36: 11ENIO5C

Squares and roots of 81426975168

• 81426975168 squared (81426975168²) is 6630352285010088628224
• 81426975168 cubed (81426975168³) is 539889530866608545359874831941632
• The square root of 81426975168 is 285354.1223953141
• The cube root of 81426975168 is 4334.3379193175

Scales and comparisons

• 81,426,975,168 seconds is equal to 2,589 years, 6 weeks, 3 days, 20 hours, 12 minutes, 48 seconds.
• To count from 1 to 81,426,975,168 would take you about five thousand, one hundred seventy-eight 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 81426975168 cubic inches would be around 361.2 feet tall.

Recreational maths with 81426975168

• 81426975168 backwards is 86157962418
• 81426975168 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81426975168's digits is 57
• More coming soon!