66447312307 has 2 divisors, whose sum is σ = 66447312308. Its totient is φ = 66447312306.

The previous prime is 66447312263. The next prime is 66447312313. The reversal of 66447312307 is 70321374466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66447312307 - 2²⁷ = 66313094579 is a prime.

It is not a weakly prime, because it can be changed into another prime (66447312367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33223656153 + 33223656154.

It is an arithmetic number, because the mean of its divisors is an integer number (33223656154).

Almost surely, 2^66447312307 is an apocalyptic number.

66447312307 is a deficient number, since it is larger than the sum of its proper divisors (1).

66447312307 is an equidigital number, since it uses as much as digits as its factorization.

66447312307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66447312307 in words is "sixty-six billion, four hundred forty-seven million, three hundred twelve thousand, three hundred seven".