667277000557 has 2 divisors, whose sum is σ = 667277000558. Its totient is φ = 667277000556.

The previous prime is 667277000531. The next prime is 667277000561. The reversal of 667277000557 is 755000772766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350835874596 + 316441125961 = 592314^2 + 562531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667277000557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667277060557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333638500278 + 333638500279.

It is an arithmetic number, because the mean of its divisors is an integer number (333638500279).

Almost surely, 2^667277000557 is an apocalyptic number.

It is an amenable number.

667277000557 is a deficient number, since it is larger than the sum of its proper divisors (1).

667277000557 is an equidigital number, since it uses as much as digits as its factorization.

667277000557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4321800, while the sum is 52.

The spelling of 667277000557 in words is "six hundred sixty-seven billion, two hundred seventy-seven million, five hundred fifty-seven", and thus it is an aban number.