21345265664

Names of 21345265664

• Cardinal: 21345265664 can be written as Twenty-one billion, three hundred forty-five million, two hundred sixty-five thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1345265664 × 10¹⁰

Factors of 21345265664

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 2929

Divisors of 21345265664

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 8 16 32 37 64 74 101 128 148 202 256 296 404 512 592 808 1024 1184 1616 2048 2368 2789 3232 3737 4736 5578 6464 7474 9472 11156 12928 14948 18944 22312 25856 29896 37888 44624 51712 59792 75776 89248 103193 103424 119584 178496 206386 206848 239168 281689 356992 412772 478336 563378 713984 825544 956672 1126756 1427968 1651088 1913344 2253512 2855936 3302176 3826688 4507024 5711872 6604352 7653376 9014048 10422493 13208704 18028096 20844986 26417408 36056192 41689972 52834816 72112384 83379944 105669632 144224768 166759888 211339264 288449536 333519776 576899072 667039552 1334079104 2668158208 5336316416 10672632832 21345265664
• Sum of all divisors σ(n): 44283493800
• Sum of proper divisors (its aliquot sum) s(n): 22938228136
• 21345265664 is an abundant number, because the sum of its proper divisors (22938228136) is greater than itself. Its abundance is 1592962472

Bases of 21345265664

• Binary: 10011111000010001101110100000000000₂
• Hexadecimal: 0x4F846E800
• Base-36: 9T0F4E8

Squares and roots of 21345265664

• 21345265664 squared (21345265664²) is 455620366266737360896
• 21345265664 cubed (21345265664³) is 9725337759892492854839365074944
• The square root of 21345265664 is 146100.1904995335
• The cube root of 21345265664 is 2773.9620895249

Scales and comparisons

• 21,345,265,664 seconds is equal to 678 years, 37 weeks, 16 hours, 27 minutes, 44 seconds.
• To count from 1 to 21,345,265,664 would take you about one thousand, three hundred fifty-seven 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 21345265664 cubic inches would be around 231.2 feet tall.

Recreational maths with 21345265664

• 21345265664 backwards is 46656254312
• The number of decimal digits it has is: 11
• The sum of 21345265664's digits is 44
• More coming soon!