67666190659 has 2 divisors, whose sum is σ = 67666190660. Its totient is φ = 67666190658.

The previous prime is 67666190639. The next prime is 67666190701. The reversal of 67666190659 is 95609166676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67666190659 - 2¹⁵ = 67666157891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67666190597 and 67666190606.

It is not a weakly prime, because it can be changed into another prime (67666190629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33833095329 + 33833095330.

It is an arithmetic number, because the mean of its divisors is an integer number (33833095330).

Almost surely, 2^67666190659 is an apocalyptic number.

67666190659 is a deficient number, since it is larger than the sum of its proper divisors (1).

67666190659 is an equidigital number, since it uses as much as digits as its factorization.

67666190659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 67666190659 in words is "sixty-seven billion, six hundred sixty-six million, one hundred ninety thousand, six hundred fifty-nine".