1044244431521 has 4 divisors (see below), whose sum is σ = 1044251589012. Its totient is φ = 1044237274032.

The previous prime is 1044244431491. The next prime is 1044244431551. The reversal of 1044244431521 is 1251344424401.

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

It is an interprime number because it is at equal distance from previous prime (1044244431491) and next prime (1044244431551).

It can be written as a sum of positive squares in 2 ways, for example, as 965149056400 + 79095375121 = 982420^2 + 281239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044244431521 - 2²² = 1044240237217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044244431551) 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, 3355250 + ... + 3653243.

It is an arithmetic number, because the mean of its divisors is an integer number (261062897253).

Almost surely, 2^{1044244431521} is an apocalyptic number.

It is an amenable number.

1044244431521 is a deficient number, since it is larger than the sum of its proper divisors (7157491).

1044244431521 is an equidigital number, since it uses as much as digits as its factorization.

1044244431521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7157490.

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 1044244431521 its reverse (1251344424401), we get a palindrome (2295588855922).

The spelling of 1044244431521 in words is "one trillion, forty-four billion, two hundred forty-four million, four hundred thirty-one thousand, five hundred twenty-one".