66800674027 has 2 divisors, whose sum is σ = 66800674028. Its totient is φ = 66800674026.

The previous prime is 66800674001. The next prime is 66800674049. The reversal of 66800674027 is 72047600866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66800674027 - 2²³ = 66792285419 is a prime.

It is not a weakly prime, because it can be changed into another prime (66800674097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33400337013 + 33400337014.

It is an arithmetic number, because the mean of its divisors is an integer number (33400337014).

Almost surely, 2^66800674027 is an apocalyptic number.

66800674027 is a deficient number, since it is larger than the sum of its proper divisors (1).

66800674027 is an equidigital number, since it uses as much as digits as its factorization.

66800674027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 66800674027 in words is "sixty-six billion, eight hundred million, six hundred seventy-four thousand, twenty-seven".