66424022632679 has 2 divisors, whose sum is σ = 66424022632680. Its totient is φ = 66424022632678.

The previous prime is 66424022632613. The next prime is 66424022632691. The reversal of 66424022632679 is 97623622042466.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66424022632679 - 2¹⁶ = 66424022567143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66424522632679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33212011316339 + 33212011316340.

It is an arithmetic number, because the mean of its divisors is an integer number (33212011316340).

Almost surely, 2^{66424022632679} is an apocalyptic number.

66424022632679 is a deficient number, since it is larger than the sum of its proper divisors (1).

66424022632679 is an equidigital number, since it uses as much as digits as its factorization.

66424022632679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 59.

The spelling of 66424022632679 in words is "sixty-six trillion, four hundred twenty-four billion, twenty-two million, six hundred thirty-two thousand, six hundred seventy-nine".