445243342303 has 4 divisors (see below), whose sum is σ = 448749195520. Its totient is φ = 441737489088.

The previous prime is 445243342289. The next prime is 445243342309. The reversal of 445243342303 is 303243342544.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445243342303 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 (445243342309) 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, 1752926418 + ... + 1752926671.

It is an arithmetic number, because the mean of its divisors is an integer number (112187298880).

Almost surely, 2^445243342303 is an apocalyptic number.

445243342303 is a deficient number, since it is larger than the sum of its proper divisors (3505853217).

445243342303 is a wasteful number, since it uses less digits than its factorization.

445243342303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505853216.

The product of its (nonzero) digits is 414720, while the sum is 37.

Adding to 445243342303 its reverse (303243342544), we get a palindrome (748486684847).

The spelling of 445243342303 in words is "four hundred forty-five billion, two hundred forty-three million, three hundred forty-two thousand, three hundred three".