Base | Representation |
---|---|
bin | 11011111111011010… |
… | …100010110000001011 |
3 | 2212120120200202021102 |
4 | 123333122202300023 |
5 | 443023031430242 |
6 | 21450153532015 |
7 | 2112534606416 |
oct | 337732426013 |
9 | 85516622242 |
10 | 30054951947 |
11 | 11823267269 |
12 | 59a941400b |
13 | 2aac895447 |
14 | 1651870b7d |
15 | bad880e32 |
hex | 6ff6a2c0b |
30054951947 has 2 divisors, whose sum is σ = 30054951948. Its totient is φ = 30054951946.
The previous prime is 30054951917. The next prime is 30054951977. The reversal of 30054951947 is 74915945003.
It is a balanced prime because it is at equal distance from previous prime (30054951917) and next prime (30054951977).
It is an emirp because it is prime and its reverse (74915945003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30054951947 - 210 = 30054950923 is a prime.
It is not a weakly prime, because it can be changed into another prime (30054951917) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15027475973 + 15027475974.
It is an arithmetic number, because the mean of its divisors is an integer number (15027475974).
Almost surely, 230054951947 is an apocalyptic number.
30054951947 is a deficient number, since it is larger than the sum of its proper divisors (1).
30054951947 is an equidigital number, since it uses as much as digits as its factorization.
30054951947 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 680400, while the sum is 47.
The spelling of 30054951947 in words is "thirty billion, fifty-four million, nine hundred fifty-one thousand, nine hundred forty-seven".
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