663445225123 has 2 divisors, whose sum is σ = 663445225124. Its totient is φ = 663445225122.

The previous prime is 663445225111. The next prime is 663445225139. The reversal of 663445225123 is 321522544366.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663445225123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663445225123.

It is not a weakly prime, because it can be changed into another prime (663445285123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331722612561 + 331722612562.

It is an arithmetic number, because the mean of its divisors is an integer number (331722612562).

Almost surely, 2^663445225123 is an apocalyptic number.

663445225123 is a deficient number, since it is larger than the sum of its proper divisors (1).

663445225123 is an equidigital number, since it uses as much as digits as its factorization.

663445225123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 43.

Adding to 663445225123 its reverse (321522544366), we get a palindrome (984967769489).

The spelling of 663445225123 in words is "six hundred sixty-three billion, four hundred forty-five million, two hundred twenty-five thousand, one hundred twenty-three".