81808055472

Names of 81808055472

• Cardinal: 81808055472 can be written as Eighty-one billion, eight hundred eight million, fifty-five thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 8.1808055472 × 10¹⁰

Factors of 81808055472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2115

Divisors of 81808055472

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 16 22 24 26 33 39 44 48 52 66 78 88 104 121 132 143 156 176 208 242 264 286 312 363 429 484 528 572 624 726 858 968 977 1109 1144 1452 1573 1716 1936 1954 2218 2288 2904 2931 3146 3327 3432 3908 4436 4719 5808 5862 6292 6654 6864 7816 8872 9438 10747 11724 12199 12584 12701 13308 14417 15632 17744 18876 21494 23448 24398 25168 25402 26616 28834 32241 36597 37752 38103 42988 43251 46896 48796 50804 53232 57668 64482 73194 75504 76206 85976 86502 97592 101608 115336 118217 128964 134189 139711 146388 152412 158587 171952 173004 195184 203216 230672 236434 257928 268378 279422 292776 304824 317174 346008 354651 402567 419133 472868 475761 515856 536756 558844 585552 609648 634348 692016 709302 805134 838266 945736 951522 1073512 1083493 1117688 1268696 1418604 1536821 1610268 1676532 1744457 1891472 1903044 2147024 2166986 2235376 2537392 2837208 3073642 3220536 3250479 3353064 3488914 3806088 4333972 4610463 5233371 5674416 6147284 6441072 6500958 6706128 6977828 7612176 8667944 9220926 10466742 11918423 12294568 13001916 13955656 14085409 17335888 18441852 20933484 23836846 24589136 26003832 27911312 28170818 35755269 36883704 41866968 42256227 47673692 52007664 56341636 71510538 73767408 83733936 84512454 95347384 112683272 131102653 143021076 154939499 169024908 190694768 225366544 262205306 286042152 309878998 338049816 393307959 464818497 524410612 572084304 619757996 676099632 786615918 929636994 1048821224 1239515992 1573231836 1704334489 1859273988 2097642448 2479031984 3146463672 3408668978 3718547976 5113003467 6292927344 6817337956 7437095952 10226006934 13634675912 20452013868 27269351824 40904027736 81808055472
• Sum of all divisors σ(n): 250647395040
• Sum of proper divisors (its aliquot sum) s(n): 168839339568
• 81808055472 is an abundant number, because the sum of its proper divisors (168839339568) is greater than itself. Its abundance is 87031284096

Bases of 81808055472

• Binary: 1001100001100001000111101110010110000₂
• Hexadecimal: 0x130C23DCB0
• Base-36: 11KYEJLC

Squares and roots of 81808055472

• 81808055472 squared (81808055472²) is 6692557940109829142784
• 81808055472 cubed (81808055472³) is 547505151214078956285315680514048
• The square root of 81808055472 is 286021.0752234877
• The cube root of 81808055472 is 4341.0890022077

Scales and comparisons

• 81,808,055,472 seconds is equal to 2,601 years, 12 weeks, 4 days, 11 hours, 51 minutes, 12 seconds.
• To count from 1 to 81,808,055,472 would take you about five thousand, two hundred two 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 81808055472 cubic inches would be around 361.8 feet tall.

Recreational maths with 81808055472

• 81808055472 backwards is 27455080818
• 81808055472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81808055472's digits is 48
• More coming soon!