Base | Representation |
---|---|
bin | 10111111111111100… |
… | …11001011100001111 |
3 | 1020020221102111021220 |
4 | 23333332121130033 |
5 | 202341411404212 |
6 | 5530303054423 |
7 | 634201200621 |
oct | 137776313417 |
9 | 36227374256 |
10 | 12884481807 |
11 | 5511a5497a |
12 | 25b6ba1413 |
13 | 12a4486a42 |
14 | 8a3298c11 |
15 | 50623438c |
hex | 2fff9970f |
12884481807 has 4 divisors (see below), whose sum is σ = 17179309080. Its totient is φ = 8589654536.
The previous prime is 12884481751. The next prime is 12884481809. The reversal of 12884481807 is 70818448821.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 12884481807 - 214 = 12884465423 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 12884481807.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12884481809) 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, 2147413632 + ... + 2147413637.
It is an arithmetic number, because the mean of its divisors is an integer number (4294827270).
Almost surely, 212884481807 is an apocalyptic number.
12884481807 is a deficient number, since it is larger than the sum of its proper divisors (4294827273).
12884481807 is an equidigital number, since it uses as much as digits as its factorization.
12884481807 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4294827272.
The product of its (nonzero) digits is 917504, while the sum is 51.
The spelling of 12884481807 in words is "twelve billion, eight hundred eighty-four million, four hundred eighty-one thousand, eight hundred seven".
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