667376531266057 has 2 divisors, whose sum is σ = 667376531266058. Its totient is φ = 667376531266056.

The previous prime is 667376531266051. The next prime is 667376531266097. The reversal of 667376531266057 is 750662135673766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456815217111696 + 210561314154361 = 21373236^2 + 14510731^2 .

It is a cyclic number.

It is not a de Polignac number, because 667376531266057 - 2³¹ = 667374383782409 is a prime.

It is not a weakly prime, because it can be changed into another prime (667376531266051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333688265633028 + 333688265633029.

It is an arithmetic number, because the mean of its divisors is an integer number (333688265633029).

Almost surely, 2^{667376531266057} is an apocalyptic number.

It is an amenable number.

667376531266057 is a deficient number, since it is larger than the sum of its proper divisors (1).

667376531266057 is an equidigital number, since it uses as much as digits as its factorization.

667376531266057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200225600, while the sum is 70.

The spelling of 667376531266057 in words is "six hundred sixty-seven trillion, three hundred seventy-six billion, five hundred thirty-one million, two hundred sixty-six thousand, fifty-seven".