4245320561003 has 4 divisors (see below), whose sum is σ = 4245957907488. Its totient is φ = 4244683214520.

The previous prime is 4245320560993. The next prime is 4245320561039. The reversal of 4245320561003 is 3001650235424.

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

It is a cyclic number.

It is not a de Polignac number, because 4245320561003 - 2²² = 4245316366699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4245320561203) 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, 318663251 + ... + 318676572.

It is an arithmetic number, because the mean of its divisors is an integer number (1061489476872).

Almost surely, 2^{4245320561003} is an apocalyptic number.

4245320561003 is a deficient number, since it is larger than the sum of its proper divisors (637346485).

4245320561003 is an equidigital number, since it uses as much as digits as its factorization.

4245320561003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637346484.

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

Adding to 4245320561003 its reverse (3001650235424), we get a palindrome (7246970796427).

The spelling of 4245320561003 in words is "four trillion, two hundred forty-five billion, three hundred twenty million, five hundred sixty-one thousand, three".