66075656027603 has 2 divisors, whose sum is σ = 66075656027604. Its totient is φ = 66075656027602.

The previous prime is 66075656027543. The next prime is 66075656027627. The reversal of 66075656027603 is 30672065657066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66075656027603 - 2³⁸ = 65800778120659 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (66075656027683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33037828013801 + 33037828013802.

It is an arithmetic number, because the mean of its divisors is an integer number (33037828013802).

Almost surely, 2^{66075656027603} is an apocalyptic number.

66075656027603 is a deficient number, since it is larger than the sum of its proper divisors (1).

66075656027603 is an equidigital number, since it uses as much as digits as its factorization.

66075656027603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57153600, while the sum is 59.

The spelling of 66075656027603 in words is "sixty-six trillion, seventy-five billion, six hundred fifty-six million, twenty-seven thousand, six hundred three".