Base | Representation |
---|---|
bin | 10111110010000100… |
… | …10111001000100001 |
3 | 1012221211101200121022 |
4 | 23321002113020201 |
5 | 202122112033132 |
6 | 5510544135225 |
7 | 631255615151 |
oct | 137102271041 |
9 | 35854350538 |
10 | 12768080417 |
11 | 5462280884 |
12 | 2584007515 |
13 | 128631ca91 |
14 | 891a38761 |
15 | 4eaddee12 |
hex | 2f9097221 |
12768080417 has 4 divisors (see below), whose sum is σ = 12770980740. Its totient is φ = 12765180096.
The previous prime is 12768080411. The next prime is 12768080443. The reversal of 12768080417 is 71408086721.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71408086721 = 228713 ⋅312217.
It can be written as a sum of positive squares in 2 ways, for example, as 3961947136 + 8806133281 = 62944^2 + 93841^2 .
It is a cyclic number.
It is not a de Polignac number, because 12768080417 - 210 = 12768079393 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12768080411) 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, 1443548 + ... + 1452365.
It is an arithmetic number, because the mean of its divisors is an integer number (3192745185).
Almost surely, 212768080417 is an apocalyptic number.
It is an amenable number.
12768080417 is a deficient number, since it is larger than the sum of its proper divisors (2900323).
12768080417 is an equidigital number, since it uses as much as digits as its factorization.
12768080417 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2900322.
The product of its (nonzero) digits is 150528, while the sum is 44.
The spelling of 12768080417 in words is "twelve billion, seven hundred sixty-eight million, eighty thousand, four hundred seventeen".
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