21355945016

Names of 21355945016

• Cardinal: 21355945016 can be written as Twenty-one billion, three hundred fifty-five million, nine hundred forty-five thousand and sixteen.

Scientific notation

• Scientific notation: 2.1355945016 × 10¹⁰

Factors of 21355945016

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1009

Divisors of 21355945016

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 7 8 14 28 56 67 73 103 134 146 206 268 292 412 469 511 536 584 721 757 824 938 1022 1442 1514 1876 2044 2884 3028 3752 4088 4891 5299 5768 6056 6901 7519 9782 10598 13802 15038 19564 21196 27604 30076 34237 39128 42392 48307 50719 52633 55208 55261 60152 68474 77971 96614 101438 105266 110522 136948 155942 193228 202876 210532 221044 273896 311884 355033 386456 386827 405752 421064 442088 503773 545797 623768 710066 773654 1007546 1091594 1420132 1547308 2015092 2183188 2840264 3094616 3526411 3702487 4030184 4366376 5224057 5691883 7052822 7404974 10448114 11383766 14105644 14809948 20896228 22767532 25917409 28211288 29619896 36568399 39843181 41792456 45535064 51834818 73136798 79686362 103669636 146273596 159372724 207339272 292547192 318745448 381356161 762712322 1525424644 2669493127 3050849288 5338986254 10677972508 21355945016
• Sum of all divisors σ(n): 47601914880
• Sum of proper divisors (its aliquot sum) s(n): 26245969864
• 21355945016 is an abundant number, because the sum of its proper divisors (26245969864) is greater than itself. Its abundance is 4890024848

Bases of 21355945016

• Binary: 10011111000111010011101110000111000₂
• Hexadecimal: 0x4F8E9DC38
• Base-36: 9T6S0MW

Squares and roots of 21355945016

• 21355945016 squared (21355945016²) is 456076387526415240256
• 21355945016 cubed (21355945016³) is 9739942255110032118491565764096
• The square root of 21355945016 is 146136.7339719893
• The cube root of 21355945016 is 2774.4246304769

Scales and comparisons

• 21,355,945,016 seconds is equal to 679 years, 2 weeks, 5 days, 6 hours, 56 minutes, 56 seconds.
• To count from 1 to 21,355,945,016 would take you about one thousand, three hundred fifty-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 21355945016 cubic inches would be around 231.2 feet tall.

Recreational maths with 21355945016

• 21355945016 backwards is 61054955312
• The number of decimal digits it has is: 11
• The sum of 21355945016's digits is 41
• More coming soon!