Base | Representation |
---|---|
bin | 10111111110011010… |
… | …10011101111101001 |
3 | 1020020001012201011212 |
4 | 23333031103233221 |
5 | 202330113112132 |
6 | 5525123202505 |
7 | 633653623505 |
oct | 137715235751 |
9 | 36201181155 |
10 | 12871613417 |
11 | 5505765743 |
12 | 25b2816435 |
13 | 12a18cc700 |
14 | 8a16a9305 |
15 | 5050415b2 |
hex | 2ff353be9 |
12871613417 has 12 divisors (see below), whose sum is σ = 14075918604. Its totient is φ = 11763835200.
The previous prime is 12871613407. The next prime is 12871613437. The reversal of 12871613417 is 71431617821.
It can be written as a sum of positive squares in 6 ways, for example, as 124300201 + 12747313216 = 11149^2 + 112904^2 .
It is not a de Polignac number, because 12871613417 - 226 = 12804504553 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12871613407) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359978 + ... + 394115.
It is an arithmetic number, because the mean of its divisors is an integer number (1172993217).
Almost surely, 212871613417 is an apocalyptic number.
It is an amenable number.
12871613417 is a deficient number, since it is larger than the sum of its proper divisors (1204305187).
12871613417 is a wasteful number, since it uses less digits than its factorization.
12871613417 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 754220 (or 754207 counting only the distinct ones).
The product of its digits is 56448, while the sum is 41.
The spelling of 12871613417 in words is "twelve billion, eight hundred seventy-one million, six hundred thirteen thousand, four hundred seventeen".
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