12528756890 has 16 divisors (see below), whose sum is σ = 24286513608. Its totient is φ = 4626002496.

The previous prime is 12528756859. The next prime is 12528756899. The reversal of 12528756890 is 9865782521.

12528756890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10578739609 + 1950017281 = 102853^2 + 44159^2 .

It is not an unprimeable number, because it can be changed into a prime (12528756899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48187397 + ... + 48187656.

Almost surely, 2^12528756890 is an apocalyptic number.

12528756890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12528756890 is a deficient number, since it is larger than the sum of its proper divisors (11757756718).

12528756890 is a wasteful number, since it uses less digits than its factorization.

12528756890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96375073.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 12528756890 in words is "twelve billion, five hundred twenty-eight million, seven hundred fifty-six thousand, eight hundred ninety".