Base | Representation |
---|---|
bin | 10111110110011010… |
… | …10111100001001101 |
3 | 1020001100222000022222 |
4 | 23323031113201031 |
5 | 202210424120023 |
6 | 5514325145125 |
7 | 632210424065 |
oct | 137315274115 |
9 | 36040860288 |
10 | 12804520013 |
11 | 54808aa44a |
12 | 259425b1a5 |
13 | 1290a3ab7c |
14 | 8968023a5 |
15 | 4ee1dbcc8 |
hex | 2fb35784d |
12804520013 has 8 divisors (see below), whose sum is σ = 13002256608. Its totient is φ = 12606978384.
The previous prime is 12804519971. The next prime is 12804520021. The reversal of 12804520013 is 31002540821.
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 12804520013 - 214 = 12804503629 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12804520093) 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, 86495 + ... + 181907.
It is an arithmetic number, because the mean of its divisors is an integer number (1625282076).
Almost surely, 212804520013 is an apocalyptic number.
It is an amenable number.
12804520013 is a deficient number, since it is larger than the sum of its proper divisors (197736595).
12804520013 is an equidigital number, since it uses as much as digits as its factorization.
12804520013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 97483.
The product of its (nonzero) digits is 1920, while the sum is 26.
The spelling of 12804520013 in words is "twelve billion, eight hundred four million, five hundred twenty thousand, thirteen".
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