642745837798465401

Names of 642745837798465401

• Cardinal: 642745837798465401 can be written as Six hundred forty-two quadrillion, seven hundred forty-five trillion, eight hundred thirty-seven billion, seven hundred ninety-eight million, four hundred sixty-five thousand, four hundred one.

Scientific notation

• Scientific notation: 6.42745837798465401 × 10¹⁷

Factors of 642745837798465401

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 485339179221

Divisors of 642745837798465401

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 9 11 13 21 27 33 39 49 63 77 91 99 117 143 147 189 231 273 297 343 351 429 441 539 637 693 819 1001 1029 1287 1323 1617 1911 2079 2457 3003 3087 3773 3861 4459 4851 5733 7007 9009 9261 11319 13377 14553 17199 21021 27027 33957 40131 49049 63063 101871 120393 147147 189189 441441 1324323 485339179187 1456017537561 3397374254309 4368052612683 5338730971057 6309409329431 10192122762927 13104157838049 16016192913171 18928227988293 23781619780163 30576368288781 37371116797399 44165865306017 48048578739513 56784683964879 69403502623741 71344859340489 91729104866343 112113350392197 132497595918051 144145736218539 166471338461141 170354051894637 208210507871223 214034578021467 261597817581793 309161057142119 336340051176591 397492787754153 485824518366187 499414015383423 624631523613669 642103734064401 784793452745379 927483171426357 1009020153529773 1192478363262459 1457473555098561 1498242046150269 1831184723072551 1873894570841007 2164127399994833 2354380358236137 2782449514279071 3400771628563309 4372420665295683 4494726138450807 5493554169217653 6492382199984499 7063141074708411 8347348542837213 10202314885689927 13117261995887049 16480662507652959 19477146599953497 23805401399943163 30606944657069781 49441987522958877 58431439799860491 71416204199829489 91820833971209343 214248612599488467 642745837798465401
• Sum of all divisors σ(n): 1304591713657344000
• Sum of proper divisors (its aliquot sum) s(n): 661845875858878599
• 642745837798465401 is an abundant number, because the sum of its proper divisors (661845875858878599) is greater than itself. Its abundance is 19100038060413198

Bases of 642745837798465401

• Binary: 100011101011011111011110111100011110110101101001111101111001₂
• Hexadecimal: 0x8EB7DEF1ED69F79
• Base-36: 4VSQDTL7GFW9

Squares and roots of 642745837798465401

• 642745837798465401 squared (642745837798465401²) is 413122212007251194600118270594090801
• 642745837798465401 cubed (642745837798465401³) is 265532582269755911814879738136103848720082656650876201
• The square root of 642745837798465401 is 801714311.8333770901
• The cube root of 642745837798465401 is 863004.5610314993

Scales and comparisons

• 642,745,837,798,465,401 seconds is equal to 20,437,329,498 years, 30 weeks, 5 hours, 43 minutes, 21 seconds.
• To count from 1 to 642,745,837,798,465,401 would take you about sixty-one billion, three hundred eleven million, nine hundred eighty-eight thousand, four hundred ninety-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 642745837798465401 cubic inches would be around 71917 feet tall.

Recreational maths with 642745837798465401

• 642745837798465401 backwards is 104564897738547246
• The number of decimal digits it has is: 18
• The sum of 642745837798465401's digits is 90
• More coming soon!