663253144709 has 2 divisors, whose sum is σ = 663253144710. Its totient is φ = 663253144708.

The previous prime is 663253144699. The next prime is 663253144717. The reversal of 663253144709 is 907441352366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 466245883684 + 197007261025 = 682822^2 + 443855^2 .

It is a cyclic number.

It is not a de Polignac number, because 663253144709 - 2⁸ = 663253144453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663253144759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331626572354 + 331626572355.

It is an arithmetic number, because the mean of its divisors is an integer number (331626572355).

Almost surely, 2^663253144709 is an apocalyptic number.

It is an amenable number.

663253144709 is a deficient number, since it is larger than the sum of its proper divisors (1).

663253144709 is an equidigital number, since it uses as much as digits as its factorization.

663253144709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 663253144709 in words is "six hundred sixty-three billion, two hundred fifty-three million, one hundred forty-four thousand, seven hundred nine".