66710010067 has 2 divisors, whose sum is σ = 66710010068. Its totient is φ = 66710010066.

The previous prime is 66710010043. The next prime is 66710010089. The reversal of 66710010067 is 76001001766.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66710010067 - 2³⁵ = 32350271699 is a prime.

It is not a weakly prime, because it can be changed into another prime (66710010167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33355005033 + 33355005034.

It is an arithmetic number, because the mean of its divisors is an integer number (33355005034).

Almost surely, 2^66710010067 is an apocalyptic number.

66710010067 is a deficient number, since it is larger than the sum of its proper divisors (1).

66710010067 is an equidigital number, since it uses as much as digits as its factorization.

66710010067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The spelling of 66710010067 in words is "sixty-six billion, seven hundred ten million, ten thousand, sixty-seven".