81372975200

Names of 81372975200

• Cardinal: 81372975200 can be written as Eighty-one billion, three hundred seventy-two million, nine hundred seventy-five thousand, two hundred.

Scientific notation

• Scientific notation: 8.13729752 × 10¹⁰

Factors of 81372975200

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 374

Divisors of 81372975200

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 4 5 8 10 11 16 17 20 22 25 32 34 37 40 44 50 55 61 68 74 80 85 88 100 110 122 136 148 160 170 176 185 187 200 220 241 244 272 275 296 305 340 352 370 374 400 407 425 440 482 488 544 550 592 610 629 671 680 740 748 800 814 850 880 925 935 964 976 1037 1100 1184 1205 1220 1258 1342 1360 1480 1496 1525 1628 1700 1760 1850 1870 1928 1952 2035 2074 2200 2257 2410 2440 2516 2651 2684 2720 2960 2992 3050 3145 3256 3355 3400 3700 3740 3856 4070 4097 4148 4400 4514 4675 4820 4880 5032 5185 5302 5368 5920 5984 6025 6100 6290 6512 6710 6800 6919 7400 7480 7712 8140 8194 8296 8800 8917 9028 9350 9640 9760 10064 10175 10370 10604 10736 11285 11407 12050 12200 12580 13024 13255 13420 13600 13838 14701 14800 14960 15725 16280 16388 16592 16775 17834 18056 18700 19280 20128 20350 20485 20740 21208 21472 22570 22814 24100 24400 24827 25160 25925 26510 26840 27676 29402 29600 29920 31450 32560 32776 33184 33550 34595 35668 36112 37400 38369 38560 40700 40970 41480 42416 44585 45067 45140 45628 48200 48800 49654 50320 51850 53020 53680 55352 56425 57035 58804 62900 65120 65552 66275 67100 69190 71336 72224 73505 74800 76738 81400 81940 82960 84832 89170 90134 90280 91256 96400 98087 99308 100640 102425 103700 106040 107360 110704 112850 114070 117608 124135 125800 131104 132550 134200 138380 142672 147010 149600 151589 153476 161711 162800 163880 165920 172975 178340 180268 180560 182512 191845 192800 196174 198616 204850 207400 212080 221408 222925 225335 225700 228140 235216 248270 249917 251600 265100 268400 276760 285175 285344 294020 303178 306952 323422 325600 327760 345950 356680 360536 361120 365024 367525 383690 392348 397232 409700 414800 422059 424160 445850 450670 451400 456280 470432 490435 496540 499834 503200 530200 536800 543937 553520 570350 588040 606356 613904 620675 646844 655520 691900 713360 721072 735050 757945 767380 784696 794464 808555 819400 829600 844118 891700 901340 902800 912560 959225 980870 993080 999668 1060400 1087874 1107040 1126675 1140700 1176080 1212712 1227808 1241350 1249585 1293688 1383800 1426720 1442144 1470100 1515890 1534760 1569392 1617110 1638800 1667479 1688236 1783400 1802680 1805600 1825120 1918450 1961740 1986160 1999336 2110295 2120800 2175748 2253350 2281400 2352160 2425424 2452175 2482700 2499170 2587376 2719685 2749087 2767600 2940200 3031780 3069520 3138784 3234220 3277600 3334958 3376472 3566800 3605360 3789725 3836900 3923480 3972320 3998672 4042775 4220590 4351496 4506700 4562800 4850848 4904350 4965400 4998340 5174752 5439370 5498174 5535200 5880400 5983307 6063560 6139040 6247925 6468440 6669916 6752944 7133600 7210720 7579450 7673800 7846960 7997344 8085550 8337395 8441180 8702992 9013400 9125600 9246929 9808700 9930800 9996680 10551475 10878740 10996348 11760800 11966614 12127120 12495850 12936880 13339832 13505888 13598425 13745435 15158900 15347600 15693920 16171100 16674790 16882360 17405984 18026800 18493858 19617400 19861600 19993360 21102950 21757480 21992696 23933228 24254240 24991700 25873760 26679664 27196850 27490870 29916535 30317800 30695200 32342200 33349580 33764720 36053600 36987716 39234800 39986720 41686975 42205900 43514960 43985392 46234645 47866456 49983400 53359328 54393700 54981740 59833070 60635600 64684400 66699160 67529440 68727175 73975432 78469600 83373950 84411800 87029920 87970784 92469290 95732912 99966800 101716219 108787400 109963480 119666140 121271200 129368800 133398320 137454350 147950864 149582675 166747900 168823600 184938580 191465824 199933600 203432438 217574800 219926960 231173225 239332280 266796640 274908700 295901728 299165350 333495800 337647200 369877160 406864876 435149600 439853920 462346450 478664560 508581095 549817400 598330700 666991600 739754320 813729752 924692900 957329120 1017162190 1099634800 1196661400 1333983200 1479508640 1627459504 1849385800 2034324380 2199269600 2393322800 2542905475 3254919008 3698771600 4068648760 4786645600 5085810950 7397543200 8137297520 10171621900 16274595040 20343243800 40686487600 81372975200
• Sum of all divisors σ(n): 240517480896
• Sum of proper divisors (its aliquot sum) s(n): 159144505696
• 81372975200 is an abundant number, because the sum of its proper divisors (159144505696) is greater than itself. Its abundance is 77771530496

Bases of 81372975200

• Binary: 1001011110010001101010001000001100000₂
• Hexadecimal: 0x12F2351060
• Base-36: 11DRD9I8

Squares and roots of 81372975200

• 81372975200 squared (81372975200²) is 6621561092899815040000
• 81372975200 cubed (81372975200³) is 538816126597821545334507008000000
• The square root of 81372975200 is 285259.4874846409
• The cube root of 81372975200 is 4333.3795724193

Scales and comparisons

• 81,372,975,200 seconds is equal to 2,587 years, 21 weeks, 1 day, 20 hours, 13 minutes, 20 seconds.
• To count from 1 to 81,372,975,200 would take you about five thousand, one hundred seventy-four 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 81372975200 cubic inches would be around 361.1 feet tall.

Recreational maths with 81372975200

• 81372975200 backwards is 00257927318
• 81372975200 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81372975200's digits is 44
• More coming soon!