81684216320

Names of 81684216320

• Cardinal: 81684216320 can be written as Eighty-one billion, six hundred eighty-four million, two hundred sixteen thousand, three hundred twenty.

Scientific notation

• Scientific notation: 8.168421632 × 10¹⁰

Factors of 81684216320

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 244

Divisors of 81684216320

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 19 20 28 31 32 35 38 40 56 62 64 70 71 76 80 95 109 112 124 128 133 140 142 152 155 160 190 217 218 224 248 256 266 280 284 304 310 320 355 380 434 436 448 496 497 512 532 545 560 568 589 608 620 640 665 710 760 763 868 872 896 992 994 1064 1085 1090 1120 1136 1178 1216 1240 1280 1330 1349 1420 1520 1526 1736 1744 1792 1984 1988 2071 2128 2170 2180 2201 2240 2272 2356 2432 2480 2485 2560 2660 2698 2840 2945 3040 3052 3379 3472 3488 3584 3815 3968 3976 4123 4142 4256 4340 4360 4402 4480 4544 4712 4864 4960 4970 5320 5396 5680 5890 6080 6104 6745 6758 6944 6976 7630 7739 7936 7952 8246 8284 8512 8680 8720 8804 8960 9088 9424 9443 9728 9920 9940 10355 10640 10792 11005 11360 11780 12160 12208 13490 13516 13888 13952 14497 15260 15407 15478 15872 15904 16492 16568 16895 17024 17360 17440 17608 17920 18176 18848 18886 19840 19880 20615 20710 21280 21584 22010 22720 23560 23653 24320 24416 26980 27032 27776 27904 28994 30520 30814 30956 31808 32984 33136 33790 34048 34720 34880 35216 36352 37696 37772 38695 39680 39760 41230 41420 41819 42560 43168 44020 45440 47120 47215 47306 48640 48832 53960 54064 54173 55552 55808 57988 61040 61628 61912 63616 64201 65968 66272 67580 68096 69440 69760 70432 72485 75392 75544 77035 77390 79360 79520 82460 82840 83638 85120 86336 88040 90880 94240 94430 94612 97664 107920 108128 108346 111104 115976 118265 122080 123256 123824 127232 128402 131936 132544 135160 138880 139520 140864 144970 147041 150784 151088 154070 154780 159040 164920 165680 167276 170240 172672 176080 181760 188480 188860 189224 195328 209095 215840 216256 216692 231952 236530 239909 244160 246512 247648 254464 256804 263872 265088 270320 270865 277760 279040 281728 289940 292733 294082 301568 302176 308140 309560 318080 321005 329840 331360 334552 340480 345344 352160 376960 377720 378448 390656 418190 431680 432512 433384 449407 463904 473060 479818 488320 493024 495296 513608 527744 530176 540640 541730 555520 563456 579880 585466 588164 604352 616280 619120 636160 642010 659680 662720 669104 690688 704320 735205 753920 755440 756896 836380 863360 865024 866768 898814 927808 946120 959636 976640 986048 990592 1027216 1029287 1055488 1060352 1081280 1083460 1126912 1159760 1170932 1176328 1199545 1208704 1232560 1238240 1272320 1284020 1319360 1325440 1338208 1408640 1463665 1470410 1507840 1510880 1513792 1672760 1679363 1726720 1730048 1733536 1797628 1855616 1892240 1919272 1953280 1972096 1981184 2054432 2058574 2110976 2162560 2166920 2247035 2319520 2341864 2352656 2399090 2417408 2465120 2476480 2568040 2638720 2650880 2676416 2817280 2927330 2940820 3021760 3027584 3345520 3358726 3453440 3467072 3595256 3711232 3784480 3838544 3944192 3962368 4108864 4117148 4325120 4333840 4494070 4558271 4639040 4683728 4705312 4798180 4834816 4930240 4952960 5136080 5146435 5277440 5301760 5352832 5634560 5854660 5881640 6043520 6055168 6691040 6717452 6934144 7190512 7422464 7568960 7677088 7888384 8217728 8234296 8396815 8650240 8667680 8988140 9116542 9278080 9367456 9410624 9596360 9860480 9905920 10272160 10292870 10554880 10705664 11709320 11763280 12087040 12110336 13382080 13434904 13868288 14381024 15137920 15354176 16435456 16468592 16793630 17335360 17976280 18233084 18556160 18734912 18821248 19192720 19720960 19811840 20544320 20585740 21411328 22791355 23418640 23526560 24174080 26764160 26869808 27736576 28762048 30275840 30708352 31907897 32870912 32937184 33587260 34670720 35952560 36466168 37112320 37469824 37642496 38385440 39441920 41088640 41171480 45582710 46837280 47053120 53528320 53739616 57524096 60551680 61416704 63815794 65874368 67174520 69341440 71905120 72932336 74939648 75284992 76770880 82177280 82342960 91165420 93674560 94106240 107056640 107479232 115048192 122833408 127631588 131748736 134349040 138682880 143810240 145864672 149879296 153541760 159539485 164354560 164685920 182330840 187349120 188212480 214958464 230096384 255263176 263497472 268698080 287620480 291729344 307083520 319078970 329371840 364661680 374698240 376424960 429916928 510526352 526994944 537396160 575240960 583458688 614167040 638157940 658743680 729323360 749396480 859833856 1021052704 1074792320 1150481920 1166917376 1276315880 1317487360 1458646720 2042105408 2149584640 2333834752 2552631760 2634974720 2917293440 4084210816 4299169280 5105263520 5834586880 8168421632 10210527040 11669173760 16336843264 20421054080 40842108160 81684216320
• Sum of all divisors σ(n): 248898355200
• Sum of proper divisors (its aliquot sum) s(n): 167214138880
• 81684216320 is an abundant number, because the sum of its proper divisors (167214138880) is greater than itself. Its abundance is 85529922560

Bases of 81684216320

• Binary: 1001100000100110000100011101000000000₂
• Hexadecimal: 0x1304C23A00
• Base-36: 11IWO8OW

Squares and roots of 81684216320

• 81684216320 squared (81684216320²) is 6672311195812554342400
• 81684216320 cubed (81684216320³) is 545022511073110567076356947968000
• The square root of 81684216320 is 285804.5071722977
• The cube root of 81684216320 is 4338.8974157627

Scales and comparisons

• 81,684,216,320 seconds is equal to 2,597 years, 15 weeks, 6 days, 4 hours, 5 minutes, 20 seconds.
• To count from 1 to 81,684,216,320 would take you about five thousand, one hundred ninety-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 81684216320 cubic inches would be around 361.6 feet tall.

Recreational maths with 81684216320

• 81684216320 backwards is 02361248618
• The number of decimal digits it has is: 11
• The sum of 81684216320's digits is 41
• More coming soon!