66630315733 has 2 divisors, whose sum is σ = 66630315734. Its totient is φ = 66630315732.

The previous prime is 66630315659. The next prime is 66630315769. The reversal of 66630315733 is 33751303666.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61825330609 + 4804985124 = 248647^2 + 69318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66630315733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66630315733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66630315793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33315157866 + 33315157867.

It is an arithmetic number, because the mean of its divisors is an integer number (33315157867).

Almost surely, 2^66630315733 is an apocalyptic number.

It is an amenable number.

66630315733 is a deficient number, since it is larger than the sum of its proper divisors (1).

66630315733 is an equidigital number, since it uses as much as digits as its factorization.

66630315733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 43.

The spelling of 66630315733 in words is "sixty-six billion, six hundred thirty million, three hundred fifteen thousand, seven hundred thirty-three".