806166683867 has 2 divisors, whose sum is σ = 806166683868. Its totient is φ = 806166683866.

The previous prime is 806166683837. The next prime is 806166683887. The reversal of 806166683867 is 768386661608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 806166683867 - 2¹² = 806166679771 is a prime.

It is not a weakly prime, because it can be changed into another prime (806166683827) 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, 403083341933 + 403083341934.

It is an arithmetic number, because the mean of its divisors is an integer number (403083341934).

Almost surely, 2^806166683867 is an apocalyptic number.

806166683867 is a deficient number, since it is larger than the sum of its proper divisors (1).

806166683867 is an equidigital number, since it uses as much as digits as its factorization.

806166683867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83607552, while the sum is 65.

The spelling of 806166683867 in words is "eight hundred six billion, one hundred sixty-six million, six hundred eighty-three thousand, eight hundred sixty-seven".