663051523213 has 2 divisors, whose sum is σ = 663051523214. Its totient is φ = 663051523212.

The previous prime is 663051523181. The next prime is 663051523297. The reversal of 663051523213 is 312325150366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367639706889 + 295411816324 = 606333^2 + 543518^2 .

It is a cyclic number.

It is not a de Polignac number, because 663051523213 - 2⁵ = 663051523181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663051526213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331525761606 + 331525761607.

It is an arithmetic number, because the mean of its divisors is an integer number (331525761607).

Almost surely, 2^663051523213 is an apocalyptic number.

It is an amenable number.

663051523213 is a deficient number, since it is larger than the sum of its proper divisors (1).

663051523213 is an equidigital number, since it uses as much as digits as its factorization.

663051523213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 37.

Adding to 663051523213 its reverse (312325150366), we get a palindrome (975376673579).

The spelling of 663051523213 in words is "six hundred sixty-three billion, fifty-one million, five hundred twenty-three thousand, two hundred thirteen".