121664155491
121,664,155,491 is an odd composite number composed of four prime numbers multiplied together.
121664155491 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 121664155491:
35 × 47 × 732 × 1999
(3 × 3 × 3 × 3 × 3 × 47 × 73 × 73 × 1999)See below for interesting mathematical facts about the number 121664155491 from the Numbermatics database.
Names of 121664155491
- Cardinal: 121664155491 can be written as One hundred twenty-one billion, six hundred sixty-four million, one hundred fifty-five thousand, four hundred ninety-one.
Scientific notation
- Scientific notation: 1.21664155491 × 1011
Factors of 121664155491
Divisors of 121664155491
- Number of divisors d(n): 72
-
Complete list of divisors:
1 3 9 27 47 73 81 141 219 243 423 657 1269 1971 1999 3431 3807 5329 5913 5997 10293 11421 15987 17739 17991 30879 47961 53973 92637 93953 143883 145927 161919 250463 277911 281859 431649 437781 485757 751389 833733 845577 1294947 1313343 2254167 2536731 3940029 6762501 6858569 7610193 10652671 11820087 20287503 20575707 22830579 31958013 35460261 60862509 61727121 95874039 185181363 287622117 500675537 555544089 862866351 1502026611 1666632267 2588599053 4506079833 13518239499 40554718497 121664155491
- Sum of all divisors σ(n): 188802432000
- Sum of proper divisors (its aliquot sum) s(n): 67138276509
- 121664155491 is a deficient number, because the sum of its proper divisors (67138276509) is less than itself. Its deficiency is 54525878982
Bases of 121664155491
- Binary: 11100010100111011111110101111011000112
- Hexadecimal: 0x1C53BFAF63
- Base-36: 1JW3P36R
Squares and roots of 121664155491
- 121664155491 squared (1216641554912) is 14802166731338225451081
- 121664155491 cubed (1216641554913) is 1800893114805241083792332398035771
-
The
square root of 121664155491 is 348803.8925972589 -
The
cube root of 121664155491 is 4955.1204435663
Scales and comparisons
How big is 121664155491?- 121,664,155,491 seconds is equal to 3,868 years, 28 weeks, 1 day, 22 hours, 44 minutes, 51 seconds.
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To count from 1 to 121,664,155,491 would take you about seven thousand, seven hundred thirty-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 121664155491 cubic inches would be around 412.9 feet tall.
Recreational maths with 121664155491
- 121664155491 backwards is 194551466121
- The number of decimal digits it has is: 12
- The sum of 121664155491's digits is 45
- More coming soon!
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