Base | Representation |
---|---|
bin | 11000000001010011… |
… | …00000110010010111 |
3 | 1020021201200201002212 |
4 | 30000221200302113 |
5 | 202402310042322 |
6 | 5531345224035 |
7 | 634366233104 |
oct | 140051406227 |
9 | 36251621085 |
10 | 12895784087 |
11 | 55183744aa |
12 | 25ba93201b |
13 | 12a6913294 |
14 | 8a499baab |
15 | 5072180e2 |
hex | 300a60c97 |
12895784087 has 2 divisors, whose sum is σ = 12895784088. Its totient is φ = 12895784086.
The previous prime is 12895784059. The next prime is 12895784123. The reversal of 12895784087 is 78048759821.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 12895784087 - 218 = 12895521943 is a prime.
It is a super-4 number, since 4×128957840874 (a number of 42 digits) contains 4444 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12895784387) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6447892043 + 6447892044.
It is an arithmetic number, because the mean of its divisors is an integer number (6447892044).
Almost surely, 212895784087 is an apocalyptic number.
12895784087 is a deficient number, since it is larger than the sum of its proper divisors (1).
12895784087 is an equidigital number, since it uses as much as digits as its factorization.
12895784087 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 9031680, while the sum is 59.
The spelling of 12895784087 in words is "twelve billion, eight hundred ninety-five million, seven hundred eighty-four thousand, eighty-seven".
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