10442541521 has 4 divisors (see below), whose sum is σ = 10444888932. Its totient is φ = 10440194112.

The previous prime is 10442541491. The next prime is 10442541523. The reversal of 10442541521 is 12514524401.

It is a happy number.

10442541521 is digitally balanced in base 2, 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: 12514524401 = 19 ⋅658659179.

It can be written as a sum of positive squares in 2 ways, for example, as 6109610896 + 4332930625 = 78164^2 + 65825^2 .

It is a cyclic number.

It is not a de Polignac number, because 10442541521 - 2⁶ = 10442541457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10442541523) 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 3 ways as a sum of consecutive naturals, for example, 1167020 + ... + 1175933.

It is an arithmetic number, because the mean of its divisors is an integer number (2611222233).

Almost surely, 2^10442541521 is an apocalyptic number.

It is an amenable number.

10442541521 is a deficient number, since it is larger than the sum of its proper divisors (2347411).

10442541521 is an equidigital number, since it uses as much as digits as its factorization.

10442541521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347410.

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 10442541521 in words is "ten billion, four hundred forty-two million, five hundred forty-one thousand, five hundred twenty-one".