81426689273815808

Names of 81426689273815808

• Cardinal: 81426689273815808 can be written as Eighty-one quadrillion, four hundred twenty-six trillion, six hundred eighty-nine billion, two hundred seventy-three million, eight hundred fifteen thousand, eight hundred eight.

Scientific notation

• Scientific notation: 8.1426689273815808 × 10¹⁶

Factors of 81426689273815808

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 277

Divisors of 81426689273815808

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 71 104 128 142 191 208 256 284 382 416 568 764 832 923 1136 1528 1664 1846 2272 2483 3056 3328 3692 4544 4966 5041 6112 7384 9088 9932 10082 12224 13561 14768 18176 19864 20164 24448 27122 29536 39728 40328 48896 54244 59072 65533 79456 80656 108488 118144 131066 158912 161312 176293 216976 236288 262132 317824 322624 352586 357911 433952 524264 635648 645248 705172 715822 867904 962831 1048528 1290496 1410344 1431644 1735808 1925662 2097056 2820688 2863288 3471616 3851324 4194112 4652843 5641376 5726576 7702648 8388224 9305686 11282752 11453152 12516803 15405296 16776448 18611372 22565504 22906304 25033606 25411681 30810592 37222744 45131008 45812608 50067212 50823362 61621184 68361001 74445488 91625216 100134424 101646724 123242368 136722002 148890976 200268848 203293448 246484736 273444004 297781952 330351853 400537696 406586896 546888008 595563904 660703706 801075392 813173792 888693013 1093776016 1191127808 1321407412 1602150784 1626347584 1777386026 1804229351 2187552032 2642814824 3204301568 3252695168 3554772052 3608458702 4375104064 4853631071 5285629648 6505390336 7109544104 7216917404 8750208128 9707262142 10571259296 14219088208 14433834808 17500416256 19414524284 21142518592 23454981563 28438176416 28867669616 38829048568 42285037184 46909963126 56876352832 57735339232 63097203923 77658097136 84570074368 93819926252 113752705664 115470678464 126194407846 128100283921 155316194272 187639852504 227505411328 230941356928 252388815692 256200567842 310632388544 344607806041 375279705008 461882713856 504777631384 512401135684 621264777088 689215612082 750559410016 1009555262768 1024802271368 1242529554176 1378431224164 1501118820032 1665303690973 2019110525536 2049604542736 2756862448328 3002237640064 3330607381946 4038221051072 4099209085472 4479901478533 5513724896656 6004475280128 6661214763892 8076442102144 8198418170944 8959802957066 11027449793312 13322429527784 16152884204288 16396836341888 17919605914132 22054899586624 24467154228911 26644859055568 32793672683776 35839211828264 44109799173248 48934308457822 53289718111136 71678423656528 88219598346496 97868616915644 106579436222272 143356847313056 195737233831288 213158872444544 286713694626112 318073004975843 391474467662576 426317744889088 573427389252224 636146009951686 782948935325152 1146854778504448 1272292019903372 1565897870650304 2544584039806744 3131795741300608 5089168079613488 6263591482601216 10178336159226976 20356672318453952 40713344636907904 81426689273815808
• Sum of all divisors σ(n): 178468085795991936
• Sum of proper divisors (its aliquot sum) s(n): 97041396522176128
• 81426689273815808 is an abundant number, because the sum of its proper divisors (97041396522176128) is greater than itself. Its abundance is 15614707248360320

Bases of 81426689273815808

• Binary: 100100001010010010010010001111001011001101110001100000000₂
• Hexadecimal: 0x12149247966E300
• Base-36: M9RCON6TBSW

Squares and roots of 81426689273815808

• 81426689273815808 squared (81426689273815808²) is 6630305726094550357574520710692864
• 81426689273815808 cubed (81426689273815808³) is 539883844149102656238665282789603120058396795994112
• The square root of 81426689273815808 is 285353621.4485735381
• The cube root of 81426689273815808 is 433433.2846619103

Scales and comparisons

• 81,426,689,273,815,808 seconds is equal to 2,589,116,849 years, 32 weeks, 1 day, 18 hours, 10 minutes, 8 seconds.
• To count from 1 to 81,426,689,273,815,808 would take you about seven billion, seven hundred sixty-seven million, three hundred fifty thousand, five hundred forty-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 81426689273815808 cubic inches would be around 36119.4 feet tall.

Recreational maths with 81426689273815808

• 81426689273815808 backwards is 80851837298662418
• The number of decimal digits it has is: 17
• The sum of 81426689273815808's digits is 86
• More coming soon!