245504222113 has 2 divisors, whose sum is σ = 245504222114. Its totient is φ = 245504222112.

The previous prime is 245504222069. The next prime is 245504222123. The reversal of 245504222113 is 311222405542.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139392462609 + 106111759504 = 373353^2 + 325748^2 .

It is a cyclic number.

It is not a de Polignac number, because 245504222113 - 2⁹ = 245504221601 is a prime.

It is not a weakly prime, because it can be changed into another prime (245504222123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122752111056 + 122752111057.

It is an arithmetic number, because the mean of its divisors is an integer number (122752111057).

Almost surely, 2^245504222113 is an apocalyptic number.

It is an amenable number.

245504222113 is a deficient number, since it is larger than the sum of its proper divisors (1).

245504222113 is an equidigital number, since it uses as much as digits as its factorization.

245504222113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 245504222113 its reverse (311222405542), we get a palindrome (556726627655).

The spelling of 245504222113 in words is "two hundred forty-five billion, five hundred four million, two hundred twenty-two thousand, one hundred thirteen".