561376991721

Names of 561376991721

• Cardinal: 561376991721 can be written as Five hundred sixty-one billion, three hundred seventy-six million, nine hundred ninety-one thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 5.61376991721 × 10¹¹

Factors of 561376991721

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8487

Divisors of 561376991721

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 13 19 21 39 57 73 91 133 181 219 247 273 399 511 543 741 949 1267 1387 1533 1729 2353 2847 3439 3801 4161 5187 6643 7059 8191 9709 10317 13213 16471 18031 19929 24073 24573 29127 39639 44707 49413 54093 57337 72219 92491 106483 126217 134121 155629 171769 172011 251047 277473 312949 319449 378651 466887 515307 597943 745381 753141 938847 1089403 1202383 1482571 1757329 1793829 2023177 2236143 3263611 3268209 3607149 4185601 4447713 5271987 6069531 7773259 9790833 10377997 11360917 12556803 14162239 19273423 22845277 23319777 28168849 31133991 34082751 42486717 54412813 57820269 68535831 79526419 84506547 108227683 134913961 147691921 163238439 197181943 238579257 324683049 366195037 404741883 443075763 591545829 757593781 1033843447 1098585111 1406959879 2056325977 2272781343 2563365259 3101530341 4220879637 6168977931 7690095777 9848719153 14394281839 26732237701 29546157459 43182845517 80196713103 187125663907 561376991721
• Sum of all divisors σ(n): 988555509760
• Sum of proper divisors (its aliquot sum) s(n): 427178518039
• 561376991721 is a deficient number, because the sum of its proper divisors (427178518039) is less than itself. Its deficiency is 134198473682

Bases of 561376991721

• Binary: 1000001010110100101011010001100111101001₂
• Hexadecimal: 0x82B4AD19E9
• Base-36: 75W5D71L

Squares and roots of 561376991721

• 561376991721 squared (561376991721²) is 315144126833719702541841
• 561376991721 cubed (561376991721³) is 176914661880454839397465657713098361
• The square root of 561376991721 is 749250.9537671607
• The cube root of 561376991721 is 8249.3209932553

Scales and comparisons

• 561,376,991,721 seconds is equal to 17,850 years, 2 weeks, 4 days, 21 hours, 15 minutes, 21 seconds.
• To count from 1 to 561,376,991,721 would take you about thirty-five thousand, seven hundred 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 561376991721 cubic inches would be around 687.4 feet tall.

Recreational maths with 561376991721

• 561376991721 backwards is 127199673165
• 561376991721 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 561376991721's digits is 57
• More coming soon!