667025017171 has 2 divisors, whose sum is σ = 667025017172. Its totient is φ = 667025017170.

The previous prime is 667025017133. The next prime is 667025017187. The reversal of 667025017171 is 171710520766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667025017171 - 2¹⁵ = 667024984403 is a prime.

It is not a weakly prime, because it can be changed into another prime (667025017871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333512508585 + 333512508586.

It is an arithmetic number, because the mean of its divisors is an integer number (333512508586).

Almost surely, 2^667025017171 is an apocalyptic number.

667025017171 is a deficient number, since it is larger than the sum of its proper divisors (1).

667025017171 is an equidigital number, since it uses as much as digits as its factorization.

667025017171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 43.

The spelling of 667025017171 in words is "six hundred sixty-seven billion, twenty-five million, seventeen thousand, one hundred seventy-one".