Base | Representation |
---|---|
bin | 10111110110010000… |
… | …01000100001010101 |
3 | 1020001021101022002112 |
4 | 23323020020201111 |
5 | 202210101212421 |
6 | 5514235520405 |
7 | 632162650460 |
oct | 137310104125 |
9 | 36037338075 |
10 | 12803147861 |
11 | 5480052539 |
12 | 25938b9105 |
13 | 129067a44a |
14 | 8965662d7 |
15 | 4ee01a45b |
hex | 2fb208855 |
12803147861 has 8 divisors (see below), whose sum is σ = 14637072000. Its totient is φ = 10970449488.
The previous prime is 12803147857. The next prime is 12803147879. The reversal of 12803147861 is 16874130821.
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 12803147861 - 22 = 12803147857 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12803147801) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283946 + ... + 325931.
It is an arithmetic number, because the mean of its divisors is an integer number (1829634000).
Almost surely, 212803147861 is an apocalyptic number.
It is an amenable number.
12803147861 is a deficient number, since it is larger than the sum of its proper divisors (1833924139).
12803147861 is an equidigital number, since it uses as much as digits as its factorization.
12803147861 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 612883.
The product of its (nonzero) digits is 64512, while the sum is 41.
The spelling of 12803147861 in words is "twelve billion, eight hundred three million, one hundred forty-seven thousand, eight hundred sixty-one".
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