640164899840

Names of 640164899840

• Cardinal: 640164899840 can be written as Six hundred forty billion, one hundred sixty-four million, eight hundred ninety-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 6.4016489984 × 10¹¹

Factors of 640164899840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 56916

Divisors of 640164899840

• Number of divisors d(n): 176
• Complete list of divisors:
  1 2 4 5 8 10 16 20 31 32 40 62 64 71 80 124 128 142 155 160 248 256 284 310 320 355 496 512 568 620 640 710 992 1024 1136 1240 1280 1420 1984 2201 2272 2480 2560 2840 3968 4402 4544 4960 5120 5680 7936 8804 9088 9920 11005 11360 15872 17608 18176 19840 22010 22720 31744 35216 36352 39680 44020 45440 56807 70432 72704 79360 88040 90880 113614 140864 158720 176080 181760 227228 281728 284035 352160 363520 454456 563456 568070 704320 908912 1126912 1136140 1408640 1761017 1817824 2253824 2272280 2817280 3522034 3635648 4033297 4544560 5634560 7044068 7271296 8066594 8805085 9089120 11269120 14088136 14542592 16133188 17610170 18178240 20166485 28176272 29085184 32266376 35220340 36356480 40332970 56352544 58170368 64532752 70440680 72712960 80665940 112705088 125032207 129065504 140881360 145425920 161331880 225410176 250064414 258131008 281762720 290851840 322663760 450820352 500128828 516262016 563525440 625161035 645327520 901640704 1000257656 1032524032 1127050880 1250322070 1290655040 1803281408 2000515312 2065048064 2254101760 2500644140 2581310080 4001030624 4130096128 4508203520 5001288280 5162620160 8002061248 9016407040 10002576560 10325240320 16004122496 20005153120 20650480640 32008244992 40010306240 64016489984 80020612480 128032979968 160041224960 320082449920 640164899840
• Sum of all divisors σ(n): 1607537332224
• Sum of proper divisors (its aliquot sum) s(n): 967372432384
• 640164899840 is an abundant number, because the sum of its proper divisors (967372432384) is greater than itself. Its abundance is 327207532544

Bases of 640164899840

• Binary: 1001010100001100110011010010110000000000₂
• Hexadecimal: 0x950CCD2C00
• Base-36: 8635NI0W

Squares and roots of 640164899840

• 640164899840 squared (640164899840²) is 409811098987157232025600
• 640164899840 cubed (640164899840³) is 262346681136433834885999864315904000
• The square root of 640164899840 is 800103.0557621937
• The cube root of 640164899840 is 8618.4788339357

Scales and comparisons

• 640,164,899,840 seconds is equal to 20,355 years, 13 weeks, 4 days, 23 hours, 17 minutes, 20 seconds.
• To count from 1 to 640,164,899,840 would take you about forty thousand, seven hundred ten 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 640164899840 cubic inches would be around 718.2 feet tall.

Recreational maths with 640164899840

• 640164899840 backwards is 048998461046
• The number of decimal digits it has is: 12
• The sum of 640164899840's digits is 59
• More coming soon!