Base | Representation |
---|---|
bin | 1101110001010001110111… |
… | …11011111100001010101111 |
3 | 10222012210022211222120010011 |
4 | 12320220323323330022233 |
5 | 12432104003400133422 |
6 | 144222403043354051 |
7 | 6243460431526111 |
oct | 670507373741257 |
9 | 128183284876104 |
10 | 30280525005487 |
11 | 9714997a54769 |
12 | 349069a682927 |
13 | 13b8597591b63 |
14 | 769829c2b3b1 |
15 | 3779ec874077 |
hex | 1b8a3befc2af |
30280525005487 has 2 divisors, whose sum is σ = 30280525005488. Its totient is φ = 30280525005486.
The previous prime is 30280525005461. The next prime is 30280525005559. The reversal of 30280525005487 is 78450052508203.
It is a weak prime.
It is an emirp because it is prime and its reverse (78450052508203) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30280525005487 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 30280525005487.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30280525005587) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15140262502743 + 15140262502744.
It is an arithmetic number, because the mean of its divisors is an integer number (15140262502744).
Almost surely, 230280525005487 is an apocalyptic number.
30280525005487 is a deficient number, since it is larger than the sum of its proper divisors (1).
30280525005487 is an equidigital number, since it uses as much as digits as its factorization.
30280525005487 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2688000, while the sum is 49.
The spelling of 30280525005487 in words is "thirty trillion, two hundred eighty billion, five hundred twenty-five million, five thousand, four hundred eighty-seven".
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