Base | Representation |
---|---|
bin | 1111010010001111011110… |
… | …0010100001110101110001 |
3 | 2012111122101120102211022222 |
4 | 3310203313202201311301 |
5 | 4200322310130221214 |
6 | 55424333312210425 |
7 | 3353124650134436 |
oct | 364436742416561 |
9 | 65448346384288 |
10 | 16806065085809 |
11 | 539a45967597a |
12 | 1a75165239a15 |
13 | 94ba60b6b54c |
14 | 4215bc995b8d |
15 | 1e226e8b038e |
hex | f48f78a1d71 |
16806065085809 has 2 divisors, whose sum is σ = 16806065085810. Its totient is φ = 16806065085808.
The previous prime is 16806065085781. The next prime is 16806065085811. The reversal of 16806065085809 is 90858056060861.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 9337131371584 + 7468933714225 = 3055672^2 + 2732935^2 .
It is a cyclic number.
It is not a de Polignac number, because 16806065085809 - 220 = 16806064037233 is a prime.
Together with 16806065085811, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (16806065085869) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8403032542904 + 8403032542905.
It is an arithmetic number, because the mean of its divisors is an integer number (8403032542905).
Almost surely, 216806065085809 is an apocalyptic number.
It is an amenable number.
16806065085809 is a deficient number, since it is larger than the sum of its proper divisors (1).
16806065085809 is an equidigital number, since it uses as much as digits as its factorization.
16806065085809 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 24883200, while the sum is 62.
The spelling of 16806065085809 in words is "sixteen trillion, eight hundred six billion, sixty-five million, eighty-five thousand, eight hundred nine".
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