Base | Representation |
---|---|
bin | 10111110101111000… |
… | …01001001000100011 |
3 | 1020001001110121102001 |
4 | 23322330021020203 |
5 | 202203300122033 |
6 | 5514044304431 |
7 | 632124146536 |
oct | 137274111043 |
9 | 36031417361 |
10 | 12800004643 |
11 | 54792a5a38 |
12 | 2592842117 |
13 | 128cb1985a |
14 | 895d88a1d |
15 | 4edae8e7d |
hex | 2faf09223 |
12800004643 has 8 divisors (see below), whose sum is σ = 13360251168. Its totient is φ = 12240068544.
The previous prime is 12800004571. The next prime is 12800004677. The reversal of 12800004643 is 34640000821.
12800004643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 12800004643 - 29 = 12800004131 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12800004043) 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 7 ways as a sum of consecutive naturals, for example, 8721 + ... + 160237.
It is an arithmetic number, because the mean of its divisors is an integer number (1670031396).
Almost surely, 212800004643 is an apocalyptic number.
12800004643 is a deficient number, since it is larger than the sum of its proper divisors (560246525).
12800004643 is a wasteful number, since it uses less digits than its factorization.
12800004643 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 155213.
The product of its (nonzero) digits is 4608, while the sum is 28.
The spelling of 12800004643 in words is "twelve billion, eight hundred million, four thousand, six hundred forty-three".
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