Base | Representation |
---|---|
bin | 10010111000111100… |
… | …011010001100010011 |
3 | 1221100112111120101002 |
4 | 102320330122030103 |
5 | 313014333302401 |
6 | 13152344532215 |
7 | 1315424133422 |
oct | 227074321423 |
9 | 57315446332 |
10 | 20282712851 |
11 | 8669076405 |
12 | 3b2078106b |
13 | 1bb313204b |
14 | da5a792b9 |
15 | 7da9b2a6b |
hex | 4b8f1a313 |
20282712851 has 2 divisors, whose sum is σ = 20282712852. Its totient is φ = 20282712850.
The previous prime is 20282712797. The next prime is 20282712883. The reversal of 20282712851 is 15821728202.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 20282712851 - 226 = 20215603987 is a prime.
It is a super-2 number, since 2×202827128512 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (20282712251) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10141356425 + 10141356426.
It is an arithmetic number, because the mean of its divisors is an integer number (10141356426).
Almost surely, 220282712851 is an apocalyptic number.
20282712851 is a deficient number, since it is larger than the sum of its proper divisors (1).
20282712851 is an equidigital number, since it uses as much as digits as its factorization.
20282712851 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 35840, while the sum is 38.
The spelling of 20282712851 in words is "twenty billion, two hundred eighty-two million, seven hundred twelve thousand, eight hundred fifty-one".
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