662665044317 has 2 divisors, whose sum is σ = 662665044318. Its totient is φ = 662665044316.

The previous prime is 662665044311. The next prime is 662665044403. The reversal of 662665044317 is 713440566266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402477316921 + 260187727396 = 634411^2 + 510086^2 .

It is a cyclic number.

It is not a de Polignac number, because 662665044317 - 2¹⁸ = 662664782173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662665044311) 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, 331332522158 + 331332522159.

It is an arithmetic number, because the mean of its divisors is an integer number (331332522159).

Almost surely, 2^662665044317 is an apocalyptic number.

It is an amenable number.

662665044317 is a deficient number, since it is larger than the sum of its proper divisors (1).

662665044317 is an equidigital number, since it uses as much as digits as its factorization.

662665044317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 662665044317 in words is "six hundred sixty-two billion, six hundred sixty-five million, forty-four thousand, three hundred seventeen".