Base | Representation |
---|---|
bin | 110101111100111100… |
… | …011000111101000111 |
3 | 12112112021222120012111 |
4 | 311330330120331013 |
5 | 1422120234433422 |
6 | 42340225401451 |
7 | 4120402336516 |
oct | 657474307507 |
9 | 175467876174 |
10 | 57930780487 |
11 | 22628462898 |
12 | b288a99287 |
13 | 5602b58648 |
14 | 2b37b3a67d |
15 | 1790c6aa77 |
hex | d7cf18f47 |
57930780487 has 2 divisors, whose sum is σ = 57930780488. Its totient is φ = 57930780486.
The previous prime is 57930780437. The next prime is 57930780499. The reversal of 57930780487 is 78408703975.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 57930780487 - 27 = 57930780359 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (57930780407) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28965390243 + 28965390244.
It is an arithmetic number, because the mean of its divisors is an integer number (28965390244).
Almost surely, 257930780487 is an apocalyptic number.
57930780487 is a deficient number, since it is larger than the sum of its proper divisors (1).
57930780487 is an equidigital number, since it uses as much as digits as its factorization.
57930780487 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 11854080, while the sum is 58.
The spelling of 57930780487 in words is "fifty-seven billion, nine hundred thirty million, seven hundred eighty thousand, four hundred eighty-seven".
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