444253224540013 has 4 divisors (see below), whose sum is σ = 507717970902880. Its totient is φ = 380788478177148.

The previous prime is 444253224540007. The next prime is 444253224540053. The reversal of 444253224540013 is 310045422352444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444253224540013 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 (444253224540053) 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, 31732373181423 + ... + 31732373181436.

It is an arithmetic number, because the mean of its divisors is an integer number (126929492725720).

Almost surely, 2^{444253224540013} is an apocalyptic number.

It is an amenable number.

444253224540013 is a deficient number, since it is larger than the sum of its proper divisors (63464746362867).

444253224540013 is an equidigital number, since it uses as much as digits as its factorization.

444253224540013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63464746362866.

The product of its (nonzero) digits is 1843200, while the sum is 43.

Adding to 444253224540013 its reverse (310045422352444), we get a palindrome (754298646892457).

The spelling of 444253224540013 in words is "four hundred forty-four trillion, two hundred fifty-three billion, two hundred twenty-four million, five hundred forty thousand, thirteen".