245552203320013 has 4 divisors (see below), whose sum is σ = 245592517265248. Its totient is φ = 245511889374780.

The previous prime is 245552203319959. The next prime is 245552203320029. The reversal of 245552203320013 is 310023302255542.

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-245552203320013 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 (245552203320713) 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, 20156963481 + ... + 20156975662.

It is an arithmetic number, because the mean of its divisors is an integer number (61398129316312).

Almost surely, 2^{245552203320013} is an apocalyptic number.

It is an amenable number.

245552203320013 is a deficient number, since it is larger than the sum of its proper divisors (40313945235).

245552203320013 is an equidigital number, since it uses as much as digits as its factorization.

245552203320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40313945234.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 245552203320013 its reverse (310023302255542), we get a palindrome (555575505575555).

The spelling of 245552203320013 in words is "two hundred forty-five trillion, five hundred fifty-two billion, two hundred three million, three hundred twenty thousand, thirteen".