66075565524113 has 2 divisors, whose sum is σ = 66075565524114. Its totient is φ = 66075565524112.

The previous prime is 66075565524109. The next prime is 66075565524121. The reversal of 66075565524113 is 31142556557066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58958317978624 + 7117247545489 = 7678432^2 + 2667817^2 .

It is a cyclic number.

It is not a de Polignac number, because 66075565524113 - 2² = 66075565524109 is a prime.

It is not a weakly prime, because it can be changed into another prime (66075565524013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33037782762056 + 33037782762057.

It is an arithmetic number, because the mean of its divisors is an integer number (33037782762057).

Almost surely, 2^{66075565524113} is an apocalyptic number.

It is an amenable number.

66075565524113 is a deficient number, since it is larger than the sum of its proper divisors (1).

66075565524113 is an equidigital number, since it uses as much as digits as its factorization.

66075565524113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680000, while the sum is 56.

The spelling of 66075565524113 in words is "sixty-six trillion, seventy-five billion, five hundred sixty-five million, five hundred twenty-four thousand, one hundred thirteen".