667443482639 has 2 divisors, whose sum is σ = 667443482640. Its totient is φ = 667443482638.

The previous prime is 667443482633. The next prime is 667443482647. The reversal of 667443482639 is 936284344766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667443482639 - 2²⁴ = 667426705423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667443482633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333721741319 + 333721741320.

It is an arithmetic number, because the mean of its divisors is an integer number (333721741320).

Almost surely, 2^667443482639 is an apocalyptic number.

667443482639 is a deficient number, since it is larger than the sum of its proper divisors (1).

667443482639 is an equidigital number, since it uses as much as digits as its factorization.

667443482639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125411328, while the sum is 62.

The spelling of 667443482639 in words is "six hundred sixty-seven billion, four hundred forty-three million, four hundred eighty-two thousand, six hundred thirty-nine".