663122968231 has 2 divisors, whose sum is σ = 663122968232. Its totient is φ = 663122968230.

The previous prime is 663122968219. The next prime is 663122968289. The reversal of 663122968231 is 132869221366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663122968231 - 2²⁷ = 662988750503 is a prime.

It is a super-2 number, since 2×663122968231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663122968331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331561484115 + 331561484116.

It is an arithmetic number, because the mean of its divisors is an integer number (331561484116).

Almost surely, 2^663122968231 is an apocalyptic number.

663122968231 is a deficient number, since it is larger than the sum of its proper divisors (1).

663122968231 is an equidigital number, since it uses as much as digits as its factorization.

663122968231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The spelling of 663122968231 in words is "six hundred sixty-three billion, one hundred twenty-two million, nine hundred sixty-eight thousand, two hundred thirty-one".