66241814279 has 2 divisors, whose sum is σ = 66241814280. Its totient is φ = 66241814278.

The previous prime is 66241814257. The next prime is 66241814281. The reversal of 66241814279 is 97241814266.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66241814279 is a prime.

It is a Sophie Germain prime.

Together with 66241814281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66241814209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33120907139 + 33120907140.

It is an arithmetic number, because the mean of its divisors is an integer number (33120907140).

Almost surely, 2^66241814279 is an apocalyptic number.

66241814279 is a deficient number, since it is larger than the sum of its proper divisors (1).

66241814279 is an equidigital number, since it uses as much as digits as its factorization.

66241814279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The spelling of 66241814279 in words is "sixty-six billion, two hundred forty-one million, eight hundred fourteen thousand, two hundred seventy-nine".