663240740189 has 2 divisors, whose sum is σ = 663240740190. Its totient is φ = 663240740188.

The previous prime is 663240740119. The next prime is 663240740203. The reversal of 663240740189 is 981047042366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643632339289 + 19608400900 = 802267^2 + 140030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663240740189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663240740119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331620370094 + 331620370095.

It is an arithmetic number, because the mean of its divisors is an integer number (331620370095).

Almost surely, 2^663240740189 is an apocalyptic number.

It is an amenable number.

663240740189 is a deficient number, since it is larger than the sum of its proper divisors (1).

663240740189 is an equidigital number, since it uses as much as digits as its factorization.

663240740189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 663240740189 in words is "six hundred sixty-three billion, two hundred forty million, seven hundred forty thousand, one hundred eighty-nine".