66080311289 has 2 divisors, whose sum is σ = 66080311290. Its totient is φ = 66080311288.

The previous prime is 66080311259. The next prime is 66080311291. The reversal of 66080311289 is 98211308066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65942131264 + 138180025 = 256792^2 + 11755^2 .

It is a cyclic number.

It is not a de Polignac number, because 66080311289 - 2¹² = 66080307193 is a prime.

It is a super-2 number, since 2×66080311289² (a number of 22 digits) contains 22 as substring.

Together with 66080311291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66080311229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33040155644 + 33040155645.

It is an arithmetic number, because the mean of its divisors is an integer number (33040155645).

Almost surely, 2^66080311289 is an apocalyptic number.

It is an amenable number.

66080311289 is a deficient number, since it is larger than the sum of its proper divisors (1).

66080311289 is an equidigital number, since it uses as much as digits as its factorization.

66080311289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 66080311289 in words is "sixty-six billion, eighty million, three hundred eleven thousand, two hundred eighty-nine".