66667847027 has 2 divisors, whose sum is σ = 66667847028. Its totient is φ = 66667847026.

The previous prime is 66667847023. The next prime is 66667847101. The reversal of 66667847027 is 72074876666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66667847027 - 2² = 66667847023 is a prime.

It is not a weakly prime, because it can be changed into another prime (66667847023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33333923513 + 33333923514.

It is an arithmetic number, because the mean of its divisors is an integer number (33333923514).

Almost surely, 2^66667847027 is an apocalyptic number.

66667847027 is a deficient number, since it is larger than the sum of its proper divisors (1).

66667847027 is an equidigital number, since it uses as much as digits as its factorization.

66667847027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28449792, while the sum is 59.

The spelling of 66667847027 in words is "sixty-six billion, six hundred sixty-seven million, eight hundred forty-seven thousand, twenty-seven".