81583137792

Names of 81583137792

• Cardinal: 81583137792 can be written as Eighty-one billion, five hundred eighty-three million, one hundred thirty-seven thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 8.1583137792 × 10¹⁰

Factors of 81583137792

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 2656

Divisors of 81583137792

• Number of divisors d(n): 440
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 29 32 36 39 48 52 54 58 64 72 78 81 87 96 104 108 116 117 128 144 156 162 174 192 208 216 232 234 256 261 288 312 324 348 351 377 384 416 432 464 468 512 522 576 624 648 696 702 754 768 783 832 864 928 936 1024 1044 1053 1131 1152 1248 1296 1392 1404 1508 1536 1566 1664 1728 1856 1872 2088 2106 2262 2304 2349 2496 2592 2609 2784 2808 3016 3072 3132 3328 3393 3456 3712 3744 4176 4212 4524 4608 4698 4992 5184 5218 5568 5616 6032 6264 6656 6786 6912 7424 7488 7827 8352 8424 9048 9216 9396 9984 10179 10368 10436 11136 11232 12064 12528 13312 13572 13824 14848 14976 15654 16704 16848 18096 18792 19968 20358 20736 20872 22272 22464 23481 24128 25056 27144 27648 29696 29952 30537 31308 33408 33696 33917 36192 37584 39936 40716 41472 41744 44544 44928 46962 48256 50112 54288 59904 61074 62616 66816 67392 67834 70443 72384 75168 75661 81432 82944 83488 89088 89856 93924 96512 100224 101751 108576 119808 122148 125232 133632 134784 135668 140886 144768 150336 151322 162864 166976 179712 187848 193024 200448 203502 211329 217152 226983 244296 250464 267264 269568 271336 281772 289536 300672 302644 305253 325728 333952 359424 375696 386048 400896 407004 422658 434304 453966 488592 500928 539136 542672 563544 579072 601344 605288 610506 651456 667904 680949 751392 801792 814008 845316 868608 907932 915759 977184 983593 1001856 1078272 1085344 1127088 1158144 1202688 1210576 1221012 1302912 1335808 1361898 1502784 1628016 1690632 1737216 1815864 1831518 1954368 1967186 2003712 2042847 2170688 2254176 2405376 2421152 2442024 2605824 2671616 2723796 2747277 2950779 3005568 3256032 3381264 3474432 3631728 3663036 3908736 3934372 4007424 4085694 4341376 4508352 4842304 4884048 5211648 5447592 5494554 5901558 6011136 6128541 6512064 6762528 7263456 7326072 7817472 7868744 8014848 8171388 8682752 8852337 9016704 9684608 9768096 10423296 10895184 10989108 11803116 12022272 12257082 13024128 13525056 14526912 14652144 15634944 15737488 16342776 17365504 17704674 18033408 19369216 19536192 21790368 21978216 23606232 24044544 24514164 26048256 26557011 27050112 29053824 29304288 31269888 31474976 32685552 34731008 35409348 36066816 38738432 39072384 43580736 43956432 47212464 49028328 52096512 53114022 54100224 58107648 58608576 62949952 65371104 70818696 72133632 77476864 78144768 79671033 87161472 87912864 94424928 98056656 104193024 106228044 108200448 116215296 117217152 125899904 130742208 141637392 156289536 159342066 174322944 175825728 188849856 196113312 212456088 216400896 232430592 234434304 251799808 261484416 283274784 312579072 318684132 348645888 351651456 377699712 392226624 424912176 468868608 503599616 522968832 566549568 637368264 697291776 703302912 755399424 784453248 849824352 937737216 1007199232 1045937664 1133099136 1274736528 1406605824 1510798848 1568906496 1699648704 2091875328 2266198272 2549473056 2813211648 3021597696 3137812992 3399297408 4532396544 5098946112 6275625984 6798594816 9064793088 10197892224 13597189632 20395784448 27194379264 40791568896 81583137792
• Sum of all divisors σ(n): 271514489400
• Sum of proper divisors (its aliquot sum) s(n): 189931351608
• 81583137792 is an abundant number, because the sum of its proper divisors (189931351608) is greater than itself. Its abundance is 108348213816

Bases of 81583137792

• Binary: 1001011111110101110111110010000000000₂
• Hexadecimal: 0x12FEBBE400
• Base-36: 11H8HS00

Squares and roots of 81583137792

• 81583137792 squared (81583137792²) is 6655808371988458635264
• 81583137792 cubed (81583137792³) is 543001731529081613874435182297088
• The square root of 81583137792 is 285627.6208492449
• The cube root of 81583137792 is 4337.1069826053

Scales and comparisons

• 81,583,137,792 seconds is equal to 2,594 years, 4 weeks, 5 days, 6 hours, 43 minutes, 12 seconds.
• To count from 1 to 81,583,137,792 would take you about five thousand, one hundred eighty-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 81583137792 cubic inches would be around 361.4 feet tall.

Recreational maths with 81583137792

• 81583137792 backwards is 29773138518
• 81583137792 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81583137792's digits is 54
• More coming soon!