66135330553079 has 2 divisors, whose sum is σ = 66135330553080. Its totient is φ = 66135330553078.

The previous prime is 66135330553049. The next prime is 66135330553319. The reversal of 66135330553079 is 97035503353166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66135330553079 - 2²⁸ = 66135062117623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66135330553049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33067665276539 + 33067665276540.

It is an arithmetic number, because the mean of its divisors is an integer number (33067665276540).

Almost surely, 2^{66135330553079} is an apocalyptic number.

66135330553079 is a deficient number, since it is larger than the sum of its proper divisors (1).

66135330553079 is an equidigital number, since it uses as much as digits as its factorization.

66135330553079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22963500, while the sum is 56.

The spelling of 66135330553079 in words is "sixty-six trillion, one hundred thirty-five billion, three hundred thirty million, five hundred fifty-three thousand, seventy-nine".