66374231017 has 2 divisors, whose sum is σ = 66374231018. Its totient is φ = 66374231016.

The previous prime is 66374230987. The next prime is 66374231041. The reversal of 66374231017 is 71013247366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66265571241 + 108659776 = 257421^2 + 10424^2 .

It is a cyclic number.

It is not a de Polignac number, because 66374231017 - 2¹¹ = 66374228969 is a prime.

It is not a weakly prime, because it can be changed into another prime (66374231057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33187115508 + 33187115509.

It is an arithmetic number, because the mean of its divisors is an integer number (33187115509).

Almost surely, 2^66374231017 is an apocalyptic number.

It is an amenable number.

66374231017 is a deficient number, since it is larger than the sum of its proper divisors (1).

66374231017 is an equidigital number, since it uses as much as digits as its factorization.

66374231017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 66374231017 in words is "sixty-six billion, three hundred seventy-four million, two hundred thirty-one thousand, seventeen".