81382964480

Names of 81382964480

• Cardinal: 81382964480 can be written as Eighty-one billion, three hundred eighty-two million, nine hundred sixty-four thousand, four hundred eighty.

Scientific notation

• Scientific notation: 8.138296448 × 10¹⁰

Factors of 81382964480

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 251

Divisors of 81382964480

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 23 29 32 38 40 46 58 64 76 80 92 95 115 116 128 145 152 160 173 184 190 230 232 256 290 304 320 346 368 380 437 460 464 551 580 608 640 667 692 736 760 841 865 874 920 928 1102 1160 1216 1280 1334 1384 1472 1520 1682 1730 1748 1840 1856 2185 2204 2320 2432 2668 2755 2768 2944 3040 3287 3335 3364 3460 3496 3680 3712 3979 4205 4370 4408 4640 4864 5017 5336 5510 5536 5888 6080 6574 6670 6728 6920 6992 7360 7424 7958 8410 8740 8816 9280 10034 10672 11020 11072 12160 12673 13148 13340 13456 13840 13984 14720 15916 15979 16435 16820 17480 17632 18560 19343 19895 20068 21344 22040 22144 24320 25085 25346 26296 26680 26912 27680 27968 29440 31832 31958 32870 33640 34960 35264 37120 38686 39790 40136 42688 44080 44288 50170 50692 52592 53360 53824 55360 55936 63365 63664 63916 65740 67280 69920 70528 75601 77372 79580 79895 80272 85376 88160 95323 96715 100340 101384 105184 106720 107648 110720 111872 115391 126730 127328 127832 131480 134560 139840 141056 145493 151202 154744 159160 159790 160544 170752 176320 190646 193430 200680 202768 210368 213440 215296 221440 230782 253460 254656 255664 262960 269120 279680 290986 302404 309488 318320 319580 321088 352640 367517 378005 381292 386860 401360 405536 420736 426880 461564 476615 506920 509312 511328 525920 538240 559360 576955 581972 604808 618976 636640 639160 642176 705280 727465 735034 756010 762584 773720 802720 811072 841472 853760 923128 953230 1013840 1018624 1022656 1051840 1076480 1153910 1163944 1209616 1237952 1273280 1278320 1284352 1454930 1470068 1512020 1525168 1547440 1605440 1622144 1837585 1846256 1906460 2027680 2045312 2103680 2192429 2307820 2327888 2419232 2475904 2546560 2556640 2764367 2909860 2940136 3024040 3050336 3094880 3210880 3244288 3346339 3675170 3692512 3812920 4055360 4090624 4207360 4384858 4615640 4655776 4838464 4951808 5093120 5113280 5528734 5819720 5880272 6048080 6100672 6189760 6421760 6692678 7350340 7385024 7625840 8110720 8769716 9231280 9311552 9676928 10226560 10962145 11057468 11639440 11760544 12096160 12201344 12379520 13385356 13821835 14700680 14770048 15251680 16221440 16731695 17539432 18462560 18623104 19353856 20453120 21924290 22114936 23278880 23521088 24192320 24402688 24759040 26770712 27643670 29401360 29540096 30503360 33463390 35078864 36925120 37246208 43848580 44229872 46557760 47042176 48384640 53541424 55287340 58802720 61006720 63580441 66926780 70157728 73850240 87697160 88459744 93115520 94084352 96769280 107082848 110574680 117605440 122013440 127160882 133853560 140315456 147700480 175394320 176919488 186231040 214165696 221149360 235210880 254321764 267707120 280630912 317902205 350788640 353838976 428331392 442298720 470421760 508643528 535414240 561261824 635804410 701577280 707677952 856662784 884597440 1017287056 1070828480 1271608820 1403154560 1769194880 2034574112 2141656960 2543217640 2806309120 3538389760 4069148224 4283313920 5086435280 8138296448 10172870560 16276592896 20345741120 40691482240 81382964480
• Sum of all divisors σ(n): 223038990720
• Sum of proper divisors (its aliquot sum) s(n): 141656026240
• 81382964480 is an abundant number, because the sum of its proper divisors (141656026240) is greater than itself. Its abundance is 60273061760

Bases of 81382964480

• Binary: 1001011110010110011010111110100000000₂
• Hexadecimal: 0x12F2CD7D00
• Base-36: 11DXBDA8

Squares and roots of 81382964480

• 81382964480 squared (81382964480²) is 6623186907552941670400
• 81382964480 cubed (81382964480³) is 539014584841782095681675067392000
• The square root of 81382964480 is 285276.9960582171
• The cube root of 81382964480 is 4333.5568858767

Scales and comparisons

• 81,382,964,480 seconds is equal to 2,587 years, 37 weeks, 5 days, 11 hours, 1 minute, 20 seconds.
• To count from 1 to 81,382,964,480 would take you about five thousand, one hundred seventy-five 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 81382964480 cubic inches would be around 361.1 feet tall.

Recreational maths with 81382964480

• 81382964480 backwards is 08446928318
• The number of decimal digits it has is: 11
• The sum of 81382964480's digits is 53
• More coming soon!