Base | Representation |
---|---|
bin | 11000001011100010… |
… | …11110100100001111 |
3 | 1020111201110122110010 |
4 | 30011301132210033 |
5 | 203041312230343 |
6 | 5544100044303 |
7 | 636462060420 |
oct | 140561364417 |
9 | 36451418403 |
10 | 12981758223 |
11 | 5561956105 |
12 | 2623693693 |
13 | 12bb685955 |
14 | 8b217b647 |
15 | 50ea4bd33 |
hex | 305c5e90f |
12981758223 has 16 divisors (see below), whose sum is σ = 19985665280. Its totient is φ = 7341670656.
The previous prime is 12981758203. The next prime is 12981758239. The reversal of 12981758223 is 32285718921.
12981758223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 12981758223 - 28 = 12981757967 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12981758203) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3184453 + ... + 3188526.
It is an arithmetic number, because the mean of its divisors is an integer number (1249104080).
Almost surely, 212981758223 is an apocalyptic number.
12981758223 is a deficient number, since it is larger than the sum of its proper divisors (7003907057).
12981758223 is an equidigital number, since it uses as much as digits as its factorization.
12981758223 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6373086.
The product of its digits is 483840, while the sum is 48.
The spelling of 12981758223 in words is "twelve billion, nine hundred eighty-one million, seven hundred fifty-eight thousand, two hundred twenty-three".
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