Base | Representation |
---|---|
bin | 10010101000001001010… |
… | …11010100010011111111 |
3 | 2021012000200201011221221 |
4 | 21110010223110103333 |
5 | 40441234304410414 |
6 | 1210005225534211 |
7 | 64145335156363 |
oct | 11240453242377 |
9 | 2235020634857 |
10 | 640028591359 |
11 | 2274864aa763 |
12 | a4060344367 |
13 | 4847b910821 |
14 | 22d985752a3 |
15 | 119ae101224 |
hex | 9504ad44ff |
640028591359 has 2 divisors, whose sum is σ = 640028591360. Its totient is φ = 640028591358.
The previous prime is 640028591353. The next prime is 640028591387. The reversal of 640028591359 is 953195820046.
640028591359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 640028591359 - 29 = 640028590847 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (640028591353) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320014295679 + 320014295680.
It is an arithmetic number, because the mean of its divisors is an integer number (320014295680).
Almost surely, 2640028591359 is an apocalyptic number.
640028591359 is a deficient number, since it is larger than the sum of its proper divisors (1).
640028591359 is an equidigital number, since it uses as much as digits as its factorization.
640028591359 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2332800, while the sum is 52.
The spelling of 640028591359 in words is "six hundred forty billion, twenty-eight million, five hundred ninety-one thousand, three hundred fifty-nine".
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