81347069440

Names of 81347069440

• Cardinal: 81347069440 can be written as Eighty-one billion, three hundred forty-seven million, sixty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 8.134706944 × 10¹⁰

Factors of 81347069440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 12097

Divisors of 81347069440

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 29 32 35 40 52 56 58 64 65 70 80 91 104 112 116 128 130 140 145 160 182 203 208 224 232 256 260 280 290 320 364 377 406 416 448 455 464 512 520 560 580 640 728 754 812 832 896 910 928 1015 1040 1120 1160 1280 1456 1508 1624 1664 1792 1820 1856 1885 2030 2080 2240 2320 2560 2639 2912 3016 3248 3328 3584 3640 3712 3770 4060 4160 4480 4640 5278 5824 6032 6496 6656 7280 7424 7540 8120 8320 8960 9280 10556 11648 12041 12064 12992 13195 14560 14848 15080 16240 16640 17920 18560 21112 23296 24082 24128 25984 26390 29120 30160 32480 33280 37120 42224 46592 48164 48256 51968 52780 58240 60205 60320 64960 74240 84287 84448 96328 96512 103936 105560 116480 120410 120640 129920 156533 168574 168896 192656 193024 211120 232960 240820 241280 259840 313066 337148 337792 349189 385312 421435 422240 481640 482560 519680 626132 674296 675584 698378 770624 782665 842870 844480 963280 965120 1095731 1252264 1348592 1351168 1396756 1541248 1565330 1685740 1688960 1745945 1926560 2191462 2444323 2504528 2697184 2793512 3082496 3130660 3371480 3377920 3491890 3853120 4382924 4539457 4888646 5009056 5394368 5478655 5587024 6164992 6261320 6742960 6755840 6983780 7706240 8765848 9078914 9777292 10018112 10788736 10957310 11174048 12221615 12522640 13485920 13967560 15412480 17531696 18157828 19554584 20036224 21577472 21914620 22348096 22697285 24443230 25045280 26971840 27935120 30824960 31776199 35063392 36315656 39109168 40072448 43154944 43829240 44696192 45394570 48886460 50090560 53943680 55870240 63552398 70126784 72631312 78218336 80144896 87658480 89392384 90789140 97772920 100181120 107887360 111740480 127104796 140253568 145262624 156436672 158880995 175316960 178784768 181578280 195545840 200362240 215774720 223480960 254209592 280507136 290525248 312873344 317761990 350633920 363156560 391091680 400724480 446961920 508419184 561014272 581050496 625746688 635523980 701267840 726313120 782183360 893923840 1016838368 1162100992 1251493376 1271047960 1402535680 1452626240 1564366720 2033676736 2324201984 2542095920 2805071360 2905252480 3128733440 4067353472 5084191840 5810504960 6257466880 8134706944 10168383680 11621009920 16269413888 20336767360 40673534720 81347069440
• Sum of all divisors σ(n): 248350354560
• Sum of proper divisors (its aliquot sum) s(n): 167003285120
• 81347069440 is an abundant number, because the sum of its proper divisors (167003285120) is greater than itself. Its abundance is 85656215680

Bases of 81347069440

• Binary: 1001011110000101010011100011000000000₂
• Hexadecimal: 0x12F0A9C600
• Base-36: 11DBY0HS

Squares and roots of 81347069440

• 81347069440 squared (81347069440²) is 6617345706476181913600
• 81347069440 cubed (81347069440³) is 538301680693203827831691280384000
• The square root of 81347069440 is 285214.0765109605
• The cube root of 81347069440 is 4332.9196678627

Scales and comparisons

• 81,347,069,440 seconds is equal to 2,586 years, 30 weeks, 3 days, 10 minutes, 40 seconds.
• To count from 1 to 81,347,069,440 would take you about five thousand, one hundred seventy-three 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 81347069440 cubic inches would be around 361.1 feet tall.

Recreational maths with 81347069440

• 81347069440 backwards is 04496074318
• The number of decimal digits it has is: 11
• The sum of 81347069440's digits is 46
• More coming soon!