644168970742

Names of 644168970742

• Cardinal: 644168970742 can be written as Six hundred forty-four billion, one hundred sixty-eight million, nine hundred seventy thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 6.44168970742 × 10¹¹

Factors of 644168970742

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 454

Divisors of 644168970742

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 11 22 23 46 121 167 242 251 253 334 502 506 1331 1837 2662 2761 2783 3674 3841 5522 5566 5773 7682 11546 20207 30371 30613 40414 41917 42251 60742 61226 63001 63503 83834 84502 126002 127006 222277 334081 444554 461087 464761 668162 693011 698533 922174 929522 964091 1386022 1397066 1449023 1928182 2898046 5071957 5112371 7623121 7683863 10143914 10224742 10521167 10605001 15246242 15367726 15939253 21042334 21210002 31878506 55791527 83854331 111583054 115732837 116655011 167708662 175331783 231465674 233310022 241986841 350663566 483973682 1273061207 1283205121 1928649613 2546122414 2566410242 2661855251 3857299226 5323710502 14003673277 28007346554 29280407761 58560815522 322084485371 644168970742
• Sum of all divisors σ(n): 1120118533632
• Sum of proper divisors (its aliquot sum) s(n): 475949562890
• 644168970742 is a deficient number, because the sum of its proper divisors (475949562890) is less than itself. Its deficiency is 168219407852

Bases of 644168970742

• Binary: 1001010111111011011101100111000111110110₂
• Hexadecimal: 0x95FB7671F6
• Base-36: 87XDKMWM

Squares and roots of 644168970742

• 644168970742 squared (644168970742²) is 414953662866807652030564
• 644168970742 cubed (644168970742³) is 267300273914534350243818098205758488
• The square root of 644168970742 is 802601.3772365457
• The cube root of 644168970742 is 8636.4103080081

Scales and comparisons

• 644,168,970,742 seconds is equal to 20,482 years, 30 weeks, 1 day, 9 hours, 12 minutes, 22 seconds.
• To count from 1 to 644,168,970,742 would take you about forty thousand, nine hundred sixty-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 644168970742 cubic inches would be around 719.7 feet tall.

Recreational maths with 644168970742

• 644168970742 backwards is 247079861446
• The number of decimal digits it has is: 12
• The sum of 644168970742's digits is 58
• More coming soon!