660503550429967 has 2 divisors, whose sum is σ = 660503550429968. Its totient is φ = 660503550429966.

The previous prime is 660503550429917. The next prime is 660503550430019. The reversal of 660503550429967 is 769924055305066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660503550429967 - 2⁷ = 660503550429839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660503550429917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330251775214983 + 330251775214984.

It is an arithmetic number, because the mean of its divisors is an integer number (330251775214984).

Almost surely, 2^{660503550429967} is an apocalyptic number.

660503550429967 is a deficient number, since it is larger than the sum of its proper divisors (1).

660503550429967 is an equidigital number, since it uses as much as digits as its factorization.

660503550429967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416000, while the sum is 67.

The spelling of 660503550429967 in words is "six hundred sixty trillion, five hundred three billion, five hundred fifty million, four hundred twenty-nine thousand, nine hundred sixty-seven".