66736736734067 has 2 divisors, whose sum is σ = 66736736734068. Its totient is φ = 66736736734066.

The previous prime is 66736736734021. The next prime is 66736736734081. The reversal of 66736736734067 is 76043763763766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66736736734067 - 2⁸ = 66736736733811 is a prime.

It is not a weakly prime, because it can be changed into another prime (66736736733067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33368368367033 + 33368368367034.

It is an arithmetic number, because the mean of its divisors is an integer number (33368368367034).

Almost surely, 2^{66736736734067} is an apocalyptic number.

66736736734067 is a deficient number, since it is larger than the sum of its proper divisors (1).

66736736734067 is an equidigital number, since it uses as much as digits as its factorization.

66736736734067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016379008, while the sum is 71.

The spelling of 66736736734067 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred thirty-six million, seven hundred thirty-four thousand, sixty-seven".