Base | Representation |
---|---|
bin | 10111110111000100… |
… | …11110010011101111 |
3 | 1020001202101002221202 |
4 | 23323202132103233 |
5 | 202213333142342 |
6 | 5515043520115 |
7 | 632305436564 |
oct | 137342362357 |
9 | 36052332852 |
10 | 12810052847 |
11 | 5483a39339 |
12 | 259608903b |
13 | 1291c27337 |
14 | 89744286b |
15 | 4ee931332 |
hex | 2fb89e4ef |
12810052847 has 4 divisors (see below), whose sum is σ = 12810281760. Its totient is φ = 12809823936.
The previous prime is 12810052819. The next prime is 12810052867. The reversal of 12810052847 is 74825001821.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74825001821 = 80917 ⋅924713.
It is a cyclic number.
It is not a de Polignac number, because 12810052847 - 228 = 12541617391 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 12810052847.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12810052867) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31679 + ... + 163167.
It is an arithmetic number, because the mean of its divisors is an integer number (3202570440).
Almost surely, 212810052847 is an apocalyptic number.
12810052847 is a deficient number, since it is larger than the sum of its proper divisors (228913).
12810052847 is an equidigital number, since it uses as much as digits as its factorization.
12810052847 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 228912.
The product of its (nonzero) digits is 35840, while the sum is 38.
The spelling of 12810052847 in words is "twelve billion, eight hundred ten million, fifty-two thousand, eight hundred forty-seven".
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