667441408633 has 2 divisors, whose sum is σ = 667441408634. Its totient is φ = 667441408632.

The previous prime is 667441408607. The next prime is 667441408703. The reversal of 667441408633 is 336804144766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528198993529 + 139242415104 = 726773^2 + 373152^2 .

It is a cyclic number.

It is not a de Polignac number, because 667441408633 - 2¹³ = 667441400441 is a prime.

It is not a weakly prime, because it can be changed into another prime (667441402633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333720704316 + 333720704317.

It is an arithmetic number, because the mean of its divisors is an integer number (333720704317).

Almost surely, 2^667441408633 is an apocalyptic number.

It is an amenable number.

667441408633 is a deficient number, since it is larger than the sum of its proper divisors (1).

667441408633 is an equidigital number, since it uses as much as digits as its factorization.

667441408633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 667441408633 in words is "six hundred sixty-seven billion, four hundred forty-one million, four hundred eight thousand, six hundred thirty-three".