Base | Representation |
---|---|
bin | 11011111111010100… |
… | …100100011100000111 |
3 | 2212120110202012012001 |
4 | 123333110210130013 |
5 | 443022131322431 |
6 | 21450100210131 |
7 | 2112515365066 |
oct | 337724443407 |
9 | 85513665161 |
10 | 30053385991 |
11 | 11822397792 |
12 | 59a8999947 |
13 | 2aac467745 |
14 | 16515841dd |
15 | bad671e61 |
hex | 6ff524707 |
30053385991 has 2 divisors, whose sum is σ = 30053385992. Its totient is φ = 30053385990.
The previous prime is 30053385959. The next prime is 30053386039. The reversal of 30053385991 is 19958335003.
It is a weak prime.
It is an emirp because it is prime and its reverse (19958335003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30053385991 - 25 = 30053385959 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30053385911) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15026692995 + 15026692996.
It is an arithmetic number, because the mean of its divisors is an integer number (15026692996).
Almost surely, 230053385991 is an apocalyptic number.
30053385991 is a deficient number, since it is larger than the sum of its proper divisors (1).
30053385991 is an equidigital number, since it uses as much as digits as its factorization.
30053385991 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 437400, while the sum is 46.
The spelling of 30053385991 in words is "thirty billion, fifty-three million, three hundred eighty-five thousand, nine hundred ninety-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.077 sec. • engine limits •