Base | Representation |
---|---|
bin | 1011010111111001100011… |
… | …1011000110111011000101 |
3 | 1122021111010222001010110200 |
4 | 2311332120323012323011 |
5 | 3114341140122232331 |
6 | 42332452222041113 |
7 | 2430320616221214 |
oct | 265763073067305 |
9 | 48244128033420 |
10 | 12505215430341 |
11 | 3a91483111307 |
12 | 149b717419199 |
13 | 6c93101c69ca |
14 | 31338174107b |
15 | 16a4518615e6 |
hex | b5f98ec6ec5 |
12505215430341 has 48 divisors (see below), whose sum is σ = 18621532360704. Its totient is φ = 8083943236512.
The previous prime is 12505215430321. The next prime is 12505215430397. The reversal of 12505215430341 is 14303451250521.
12505215430341 is a `hidden beast` number, since 1 + 2 + 5 + 0 + 5 + 215 + 430 + 3 + 4 + 1 = 666.
It is not a de Polignac number, because 12505215430341 - 239 = 11955459616453 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12505215430296 and 12505215430305.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12505215430321) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9769380 + ... + 10975026.
It is an arithmetic number, because the mean of its divisors is an integer number (387948590848).
Almost surely, 212505215430341 is an apocalyptic number.
It is an amenable number.
12505215430341 is a deficient number, since it is larger than the sum of its proper divisors (6116316930363).
12505215430341 is a wasteful number, since it uses less digits than its factorization.
12505215430341 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1205990 (or 1205987 counting only the distinct ones).
The product of its (nonzero) digits is 72000, while the sum is 36.
Adding to 12505215430341 its reverse (14303451250521), we get a palindrome (26808666680862).
The spelling of 12505215430341 in words is "twelve trillion, five hundred five billion, two hundred fifteen million, four hundred thirty thousand, three hundred forty-one".
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