444135053213 has 4 divisors (see below), whose sum is σ = 448065452028. Its totient is φ = 440204654400.

The previous prime is 444135053209. The next prime is 444135053227. The reversal of 444135053213 is 312350531444.

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 209431623769 + 234703429444 = 457637^2 + 484462^2 .

It is a cyclic number.

It is not a de Polignac number, because 444135053213 - 2² = 444135053209 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 (444135053203) 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, 1965199238 + ... + 1965199463.

It is an arithmetic number, because the mean of its divisors is an integer number (112016363007).

Almost surely, 2^444135053213 is an apocalyptic number.

It is an amenable number.

444135053213 is a deficient number, since it is larger than the sum of its proper divisors (3930398815).

444135053213 is a wasteful number, since it uses less digits than its factorization.

444135053213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930398814.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 444135053213 its reverse (312350531444), we get a palindrome (756485584657).

The spelling of 444135053213 in words is "four hundred forty-four billion, one hundred thirty-five million, fifty-three thousand, two hundred thirteen".