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12882523018 = 26441261509
BaseRepresentation
bin10111111111101101…
…11011001110001010
31020020210201222100011
423333312323032022
5202340411214033
65530153102134
7634145432101
oct137766731612
936223658304
1012882523018
115510937242
1225b63b794a
1312a3c4c2b1
148a2d09038
15505e98ccd
hex2ffdbb38a

12882523018 has 4 divisors (see below), whose sum is σ = 19323784530. Its totient is φ = 6441261508.

The previous prime is 12882522997. The next prime is 12882523019. The reversal of 12882523018 is 81032528821.

12882523018 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81032528821 = 233523153427.

It can be written as a sum of positive squares in only one way, i.e., 9789717249 + 3092805769 = 98943^2 + 55613^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12882523019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220630753 + ... + 3220630756.

Almost surely, 212882523018 is an apocalyptic number.

12882523018 is a deficient number, since it is larger than the sum of its proper divisors (6441261512).

12882523018 is an equidigital number, since it uses as much as digits as its factorization.

12882523018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6441261511.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 12882523018 in words is "twelve billion, eight hundred eighty-two million, five hundred twenty-three thousand, eighteen".

Divisors: 1 2 6441261509 12882523018