245563605239 has 4 divisors (see below), whose sum is σ = 245766049656. Its totient is φ = 245361160824.

The previous prime is 245563605233. The next prime is 245563605299. The reversal of 245563605239 is 932506365542.

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-245563605239 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 (245563605233) 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, 101220389 + ... + 101222814.

It is an arithmetic number, because the mean of its divisors is an integer number (61441512414).

Almost surely, 2^245563605239 is an apocalyptic number.

245563605239 is a deficient number, since it is larger than the sum of its proper divisors (202444417).

245563605239 is a wasteful number, since it uses less digits than its factorization.

245563605239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202444416.

The product of its (nonzero) digits is 5832000, while the sum is 50.

The spelling of 245563605239 in words is "two hundred forty-five billion, five hundred sixty-three million, six hundred five thousand, two hundred thirty-nine".