90137208645

Names of 90137208645

• Cardinal: 90137208645 can be written as Ninety billion, one hundred thirty-seven million, two hundred eight thousand, six hundred forty-five.

Scientific notation

• Scientific notation: 9.0137208645 × 10¹⁰

Factors of 90137208645

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 150

Divisors of 90137208645

• Number of divisors d(n): 112
• Complete list of divisors:
  1 3 5 9 11 15 27 33 45 55 81 99 131 135 165 243 297 393 405 495 655 729 891 1179 1215 1441 1485 1965 2673 3537 3645 4323 4455 5895 7205 8019 10611 12969 13365 17161 17685 21615 31833 38907 40095 51483 53055 64845 85805 95499 116721 154449 159165 188771 194535 257415 350163 463347 477495 566313 583605 772245 943855 1050489 1390041 1698939 1750815 2248091 2316735 2831565 4170123 5096817 5252445 6744273 6950205 8494695 11240455 12510369 15290451 20232819 20850615 24729001 25484085 33721365 45871353 60698457 62551845 74187003 76452255 101164095 123645005 137614059 182095371 222561009 229356765 303492285 370935015 546286113 667683027 688070295 910476855 1112805045 1638858339 2003049081 2731430565 3338415135 6009147243 8194291695 10015245405 18027441729 30045736215 90137208645
• Sum of all divisors σ(n): 178276659264
• Sum of proper divisors (its aliquot sum) s(n): 88139450619
• 90137208645 is a deficient number, because the sum of its proper divisors (88139450619) is less than itself. Its deficiency is 1997758026

Bases of 90137208645

• Binary: 1010011111100100110001010011101000101₂
• Hexadecimal: 0x14FC98A745
• Base-36: 15EPD7B9

Squares and roots of 90137208645

• 90137208645 squared (90137208645²) is 8124716382312262736025
• 90137208645 cubed (90137208645³) is 732339255733930013779143982936125
• The square root of 90137208645 is 300228.5939829849
• The cube root of 90137208645 is 4483.6809512373

Scales and comparisons

• 90,137,208,645 seconds is equal to 2,866 years, 4 weeks, 2 days, 17 hours, 30 minutes, 45 seconds.
• To count from 1 to 90,137,208,645 would take you about five thousand, seven hundred thirty-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 90137208645 cubic inches would be around 373.6 feet tall.

Recreational maths with 90137208645

• 90137208645 backwards is 54680273109
• 90137208645 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 90137208645's digits is 45
• More coming soon!