245022223445213 has 4 divisors (see below), whose sum is σ = 249645284264988. Its totient is φ = 240399162625440.

The previous prime is 245022223445189. The next prime is 245022223445317. The reversal of 245022223445213 is 312544322220542.

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 63965876549689 + 181056346895524 = 7997867^2 + 13455718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245022223445213 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 (245022223045213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2311530409808 + ... + 2311530409913.

It is an arithmetic number, because the mean of its divisors is an integer number (62411321066247).

Almost surely, 2^{245022223445213} is an apocalyptic number.

It is an amenable number.

245022223445213 is a deficient number, since it is larger than the sum of its proper divisors (4623060819775).

245022223445213 is an equidigital number, since it uses as much as digits as its factorization.

245022223445213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623060819774.

The product of its (nonzero) digits is 921600, while the sum is 41.

Adding to 245022223445213 its reverse (312544322220542), we get a palindrome (557566545665755).

The spelling of 245022223445213 in words is "two hundred forty-five trillion, twenty-two billion, two hundred twenty-three million, four hundred forty-five thousand, two hundred thirteen".