667530577213 has 2 divisors, whose sum is σ = 667530577214. Its totient is φ = 667530577212.

The previous prime is 667530577199. The next prime is 667530577223. The reversal of 667530577213 is 312775035766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624664187449 + 42866389764 = 790357^2 + 207042^2 .

It is a cyclic number.

It is not a de Polignac number, because 667530577213 - 2³⁷ = 530091623741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667530577223) 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, 333765288606 + 333765288607.

It is an arithmetic number, because the mean of its divisors is an integer number (333765288607).

Almost surely, 2^667530577213 is an apocalyptic number.

It is an amenable number.

667530577213 is a deficient number, since it is larger than the sum of its proper divisors (1).

667530577213 is an equidigital number, since it uses as much as digits as its factorization.

667530577213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5556600, while the sum is 52.

The spelling of 667530577213 in words is "six hundred sixty-seven billion, five hundred thirty million, five hundred seventy-seven thousand, two hundred thirteen".