12528891275029 has 4 divisors (see below), whose sum is σ = 12566068994284. Its totient is φ = 12491713555776.

The previous prime is 12528891275011. The next prime is 12528891275081. The reversal of 12528891275029 is 92057219882521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4808262200625 + 7720629074404 = 2192775^2 + 2778602^2 .

It is a cyclic number.

It is not a de Polignac number, because 12528891275029 - 2²⁹ = 12528354404117 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 (12528891270029) 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, 18588859122 + ... + 18588859795.

It is an arithmetic number, because the mean of its divisors is an integer number (3141517248571).

Almost surely, 2^{12528891275029} is an apocalyptic number.

It is an amenable number.

12528891275029 is a deficient number, since it is larger than the sum of its proper divisors (37177719255).

12528891275029 is an equidigital number, since it uses as much as digits as its factorization.

12528891275029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37177719254.

The product of its (nonzero) digits is 14515200, while the sum is 61.

The spelling of 12528891275029 in words is "twelve trillion, five hundred twenty-eight billion, eight hundred ninety-one million, two hundred seventy-five thousand, twenty-nine".