Base | Representation |
---|---|
bin | 11000001011011101… |
… | …11010010001101111 |
3 | 1020111200012110100212 |
4 | 30011232322101233 |
5 | 203041124212140 |
6 | 5544033413035 |
7 | 636453255503 |
oct | 140556722157 |
9 | 36450173325 |
10 | 12981085295 |
11 | 5561536572 |
12 | 262340a17b |
13 | 12bb4ab579 |
14 | 8b2044303 |
15 | 50e967765 |
hex | 305bba46f |
12981085295 has 8 divisors (see below), whose sum is σ = 15603843024. Its totient is φ = 10367174464.
The previous prime is 12981085289. The next prime is 12981085303. The reversal of 12981085295 is 59258018921.
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 12981085295 - 24 = 12981085279 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2208494 + ... + 2214363.
It is an arithmetic number, because the mean of its divisors is an integer number (1950480378).
Almost surely, 212981085295 is an apocalyptic number.
12981085295 is a deficient number, since it is larger than the sum of its proper divisors (2622757729).
12981085295 is an equidigital number, since it uses as much as digits as its factorization.
12981085295 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4423449.
The product of its (nonzero) digits is 518400, while the sum is 50.
The spelling of 12981085295 in words is "twelve billion, nine hundred eighty-one million, eighty-five thousand, two hundred ninety-five".
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