Base | Representation |
---|---|
bin | 1001101001011001011011… |
… | …10100111011011000111111 |
3 | 2210010000001010011100021201 |
4 | 10310230231310323120333 |
5 | 10240030434223340130 |
6 | 113041222102040331 |
7 | 4316430042411640 |
oct | 464545564733077 |
9 | 83100033140251 |
10 | 21213612324415 |
11 | 6839708134a15 |
12 | 246740ba190a7 |
13 | bab586a92874 |
14 | 534a5c5856c7 |
15 | 26bc34b27bca |
hex | 134b2dd3b63f |
21213612324415 has 64 divisors (see below), whose sum is σ = 30918304143360. Its totient is φ = 13640212131840.
The previous prime is 21213612324391. The next prime is 21213612324433. The reversal of 21213612324415 is 51442321631212.
It is not a de Polignac number, because 21213612324415 - 25 = 21213612324383 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 214856910 + ... + 214955620.
It is an arithmetic number, because the mean of its divisors is an integer number (483098502240).
Almost surely, 221213612324415 is an apocalyptic number.
21213612324415 is a deficient number, since it is larger than the sum of its proper divisors (9704691818945).
21213612324415 is a wasteful number, since it uses less digits than its factorization.
21213612324415 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 100072.
The product of its digits is 69120, while the sum is 37.
Adding to 21213612324415 its reverse (51442321631212), we get a palindrome (72655933955627).
The spelling of 21213612324415 in words is "twenty-one trillion, two hundred thirteen billion, six hundred twelve million, three hundred twenty-four thousand, four hundred fifteen".
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