665032631363563 has 2 divisors, whose sum is σ = 665032631363564. Its totient is φ = 665032631363562.

The previous prime is 665032631363561. The next prime is 665032631363587. The reversal of 665032631363563 is 365363136230566.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665032631363563 - 2¹ = 665032631363561 is a prime.

Together with 665032631363561, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 665032631363498 and 665032631363507.

It is not a weakly prime, because it can be changed into another prime (665032631363561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332516315681781 + 332516315681782.

It is an arithmetic number, because the mean of its divisors is an integer number (332516315681782).

Almost surely, 2^{665032631363563} is an apocalyptic number.

665032631363563 is a deficient number, since it is larger than the sum of its proper divisors (1).

665032631363563 is an equidigital number, since it uses as much as digits as its factorization.

665032631363563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94478400, while the sum is 58.

The spelling of 665032631363563 in words is "six hundred sixty-five trillion, thirty-two billion, six hundred thirty-one million, three hundred sixty-three thousand, five hundred sixty-three".