10528444021 has 8 divisors (see below), whose sum is σ = 10606960280. Its totient is φ = 10450073088.

The previous prime is 10528443941. The next prime is 10528444033. The reversal of 10528444021 is 12044482501.

It can be written as a sum of positive squares in 4 ways, for example, as 280931121 + 10247512900 = 16761^2 + 101230^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10528444021 - 2²⁵ = 10494889589 is a prime.

It is a super-2 number, since 2×10528444021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10528424021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111325 + ... + 182893.

It is an arithmetic number, because the mean of its divisors is an integer number (1325870035).

Almost surely, 2^10528444021 is an apocalyptic number.

It is an amenable number.

10528444021 is a deficient number, since it is larger than the sum of its proper divisors (78516259).

10528444021 is an equidigital number, since it uses as much as digits as its factorization.

10528444021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72663.

The product of its (nonzero) digits is 10240, while the sum is 31.

The spelling of 10528444021 in words is "ten billion, five hundred twenty-eight million, four hundred forty-four thousand, twenty-one".