66643101140393 has 2 divisors, whose sum is σ = 66643101140394. Its totient is φ = 66643101140392.

The previous prime is 66643101140303. The next prime is 66643101140431. The reversal of 66643101140393 is 39304110134666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60889181135104 + 5753920005289 = 7803152^2 + 2398733^2 .

It is a cyclic number.

It is not a de Polignac number, because 66643101140393 - 2⁸ = 66643101140137 is a prime.

It is not a weakly prime, because it can be changed into another prime (66643101140303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33321550570196 + 33321550570197.

It is an arithmetic number, because the mean of its divisors is an integer number (33321550570197).

Almost surely, 2^{66643101140393} is an apocalyptic number.

It is an amenable number.

66643101140393 is a deficient number, since it is larger than the sum of its proper divisors (1).

66643101140393 is an equidigital number, since it uses as much as digits as its factorization.

66643101140393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 66643101140393 in words is "sixty-six trillion, six hundred forty-three billion, one hundred one million, one hundred forty thousand, three hundred ninety-three".