66344914879 has 2 divisors, whose sum is σ = 66344914880. Its totient is φ = 66344914878.

The previous prime is 66344914873. The next prime is 66344914921. The reversal of 66344914879 is 97841944366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66344914879 - 2¹¹ = 66344912831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66344914873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33172457439 + 33172457440.

It is an arithmetic number, because the mean of its divisors is an integer number (33172457440).

Almost surely, 2^66344914879 is an apocalyptic number.

66344914879 is a deficient number, since it is larger than the sum of its proper divisors (1).

66344914879 is an equidigital number, since it uses as much as digits as its factorization.

66344914879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 61.

The spelling of 66344914879 in words is "sixty-six billion, three hundred forty-four million, nine hundred fourteen thousand, eight hundred seventy-nine".