21387991638896
21,387,991,638,896 is an even composite number composed of six prime numbers multiplied together.
21387991638896 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 21387991638896:
24 × 23 × 41 × 773 × 977 × 1877
(2 × 2 × 2 × 2 × 23 × 41 × 773 × 977 × 1877)See below for interesting mathematical facts about the number 21387991638896 from the Numbermatics database.
Names of 21387991638896
- Cardinal: 21387991638896 can be written as Twenty-one trillion, three hundred eighty-seven billion, nine hundred ninety-one million, six hundred thirty-eight thousand, eight hundred ninety-six.
Scientific notation
- Scientific notation: 2.1387991638896 × 1013
Factors of 21387991638896
Divisors of 21387991638896
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 4 8 16 23 41 46 82 92 164 184 328 368 656 773 943 977 1546 1877 1886 1954 3092 3754 3772 3908 6184 7508 7544 7816 12368 15016 15088 15632 17779 22471 30032 31693 35558 40057 43171 44942 63386 71116 76957 80114 86342 89884 126772 142232 153914 160228 172684 179768 253544 284464 307828 320456 345368 359536 507088 615656 640912 690736 728939 755221 921311 1231312 1450921 1457878 1510442 1770011 1833829 1842622 2901842 2915756 3020884 3540022 3667658 3685244 5803684 5831512 6041768 7080044 7335316 7370488 11607368 11663024 12083536 14160088 14670632 14740976 17370083 23214736 28320176 29341264 30964061 33371183 34740166 42178067 59487761 61928122 66742366 69480332 75186989 84356134 118975522 123856244 133484732 138960664 150373978 168712268 237951044 247712488 266969464 277921328 300747956 337424536 475902088 495424976 533938928 601495912 674849072 712173403 951804176 1202991824 1368218503 1417549817 1424346806 1729300747 2736437006 2835099634 2848693612 3458601494 5472874012 5670199268 5697387224 6917202988 10945748024 11340398536 11394774448 13834405976 21891496048 22680797072 27668811952 32603645791 58119542497 65207291582 116239084994 130414583164 232478169988 260829166328 464956339976 521658332656 929912679952 1336749477431 2673498954862 5346997909724 10693995819448 21387991638896
- Sum of all divisors σ(n): 44421951063168
- Sum of proper divisors (its aliquot sum) s(n): 23033959424272
- 21387991638896 is an abundant number, because the sum of its proper divisors (23033959424272) is greater than itself. Its abundance is 1645967785376
Bases of 21387991638896
- Binary: 1001101110011110001111010010011100011011100002
- Hexadecimal: 0x1373C7A4E370
- Base-36: 7KXIA00A8
Squares and roots of 21387991638896
- 21387991638896 squared (213879916388962) is 457446186345485204060098816
- 21387991638896 cubed (213879916388963) is 9783855208802099106455671868899549147136
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The
square root of 21387991638896 is 4624715.3035506953 -
The
cube root of 21387991638896 is 27758.1169941339
Scales and comparisons
How big is 21387991638896?- 21,387,991,638,896 seconds is equal to 680,071 years, 50 weeks, 5 days, 12 hours, 34 minutes, 56 seconds.
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To count from 1 to 21,387,991,638,896 would take you about one million, seven hundred thousand, one hundred seventy-nine 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 21387991638896 cubic inches would be around 2313.2 feet tall.
Recreational maths with 21387991638896
- 21387991638896 backwards is 69883619978312
- The number of decimal digits it has is: 14
- The sum of 21387991638896's digits is 80
- More coming soon!
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