866802186803027 has 2 divisors, whose sum is σ = 866802186803028. Its totient is φ = 866802186803026.

The previous prime is 866802186802943. The next prime is 866802186803107. The reversal of 866802186803027 is 720308681208668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866802186803027 - 2¹² = 866802186798931 is a prime.

It is not a weakly prime, because it can be changed into another prime (866802185803027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433401093401513 + 433401093401514.

It is an arithmetic number, because the mean of its divisors is an integer number (433401093401514).

Almost surely, 2^{866802186803027} is an apocalyptic number.

866802186803027 is a deficient number, since it is larger than the sum of its proper divisors (1).

866802186803027 is an equidigital number, since it uses as much as digits as its factorization.

866802186803027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74317824, while the sum is 65.

The spelling of 866802186803027 in words is "eight hundred sixty-six trillion, eight hundred two billion, one hundred eighty-six million, eight hundred three thousand, twenty-seven".