Base | Representation |
---|---|
bin | 10111111111010000… |
… | …11100001110110111 |
3 | 1020020112121001220111 |
4 | 23333220130032313 |
5 | 202333423213241 |
6 | 5525535443451 |
7 | 634101236221 |
oct | 137750341667 |
9 | 36215531814 |
10 | 12878726071 |
11 | 5509783572 |
12 | 25b5086587 |
13 | 12a321cc93 |
14 | 8a25db411 |
15 | 505998c81 |
hex | 2ffa1c3b7 |
12878726071 has 8 divisors (see below), whose sum is σ = 13055860800. Its totient is φ = 12701944320.
The previous prime is 12878726059. The next prime is 12878726117. The reversal of 12878726071 is 17062787821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12878726071 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 (12878726011) 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, 14350 + ... + 161131.
It is an arithmetic number, because the mean of its divisors is an integer number (1631982600).
Almost surely, 212878726071 is an apocalyptic number.
12878726071 is a deficient number, since it is larger than the sum of its proper divisors (177134729).
12878726071 is an equidigital number, since it uses as much as digits as its factorization.
12878726071 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 176489.
The product of its (nonzero) digits is 526848, while the sum is 49.
The spelling of 12878726071 in words is "twelve billion, eight hundred seventy-eight million, seven hundred twenty-six thousand, seventy-one".
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