81432411372

Names of 81432411372

• Cardinal: 81432411372 can be written as Eighty-one billion, four hundred thirty-two million, four hundred eleven thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 8.1432411372 × 10¹⁰

Factors of 81432411372

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 260

Divisors of 81432411372

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 19 26 27 36 38 39 52 54 57 76 78 81 108 114 117 156 162 169 171 223 228 234 243 247 324 338 342 351 446 468 486 494 507 513 669 676 684 702 729 741 892 972 988 1014 1026 1053 1338 1404 1458 1482 1521 1539 2007 2028 2052 2106 2187 2197 2223 2676 2899 2916 2964 3042 3078 3159 3211 4014 4212 4237 4374 4394 4446 4563 4617 5798 6021 6084 6156 6318 6422 6591 6669 8028 8474 8697 8748 8788 8892 9126 9234 9477 9633 11596 12042 12636 12711 12844 13182 13338 13689 13851 16948 17394 18063 18252 18468 18954 19266 19773 20007 24084 25422 26091 26364 26676 27378 27702 28431 28899 34788 36126 37687 37908 38133 38532 39546 40014 41067 41553 41743 50844 52182 54189 54756 55081 55404 56862 57798 59319 60021 72252 75374 76266 78273 79092 80028 82134 83106 83486 86697 104364 108378 110162 113061 113724 114399 115596 118638 120042 123201 125229 150748 152532 156546 162567 164268 165243 166212 166972 173394 177957 180063 216756 220324 226122 228798 234819 237276 240084 246402 250458 260091 313092 325134 330486 339183 343197 346788 355914 360126 369603 375687 452244 457596 469638 487701 489931 492804 495729 500916 520182 533871 540189 650268 660972 678366 686394 704457 711828 716053 720252 739206 751374 780273 939276 975402 979862 991458 1017549 1029591 1040364 1067742 1080378 1127061 1356732 1372788 1408914 1432106 1469793 1478412 1487187 1502748 1560546 1601613 1950804 1959724 1982916 2035098 2059182 2113371 2135484 2148159 2160756 2254122 2340819 2817828 2864212 2939586 2974374 3052647 3088773 3121092 3203226 3381183 4070196 4118364 4226742 4296318 4409379 4461561 4508244 4681638 4804839 5879172 5948748 6105294 6177546 6340113 6406452 6444477 6762366 7022457 8453484 8592636 8818758 8923122 9157941 9266319 9308689 9363276 9609678 10143549 12210588 12355092 12680226 12888954 13228137 13384683 13524732 14044914 17637516 17846244 18315882 18532638 18617378 19219356 19333431 20287098 25360452 25777908 26456274 26769366 27473823 27926067 28089828 30430647 36631764 37065276 37234756 38666862 39684411 40154049 40574196 52912548 53538732 54947646 55852134 58000293 60861294 77333724 79368822 80308098 82421469 83778201 91291941 109895292 111704268 116000586 119053233 120462147 121722588 158737644 160616196 164842938 167556402 174000879 182583882 232001172 238106466 240924294 251334603 329685876 335112804 348001758 357159699 365167764 476212932 481848588 502669206 522002637 696003516 714319398 754003809 1005338412 1044005274 1071479097 1428638796 1508007618 1566007911 2088010548 2142958194 2262011427 3016015236 3132015822 4285916388 4524022854 6264031644 6786034281 9048045708 13572068562 20358102843 27144137124 40716205686 81432411372
• Sum of all divisors σ(n): 244808704000
• Sum of proper divisors (its aliquot sum) s(n): 163376292628
• 81432411372 is an abundant number, because the sum of its proper divisors (163376292628) is greater than itself. Its abundance is 81943881256

Bases of 81432411372

• Binary: 1001011110101101111111111110011101100₂
• Hexadecimal: 0x12F5BFFCEC
• Base-36: 11EQR6R0

Squares and roots of 81432411372

• 81432411372 squared (81432411372²) is 6631237621858634922384
• 81432411372 cubed (81432411372³) is 539997669928675338229939178950848
• The square root of 81432411372 is 285363.6476007411
• The cube root of 81432411372 is 4334.4343731063

Scales and comparisons

• 81,432,411,372 seconds is equal to 2,589 years, 15 weeks, 3 days, 18 hours, 16 minutes, 12 seconds.
• To count from 1 to 81,432,411,372 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 81432411372 cubic inches would be around 361.2 feet tall.

Recreational maths with 81432411372

• 81432411372 backwards is 27311423418
• 81432411372 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81432411372's digits is 36
• More coming soon!