66666592591133 has 2 divisors, whose sum is σ = 66666592591134. Its totient is φ = 66666592591132.

The previous prime is 66666592591099. The next prime is 66666592591141. The reversal of 66666592591133 is 33119529566666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52488822336889 + 14177770254244 = 7244917^2 + 3765338^2 .

It is a cyclic number.

It is not a de Polignac number, because 66666592591133 - 2²² = 66666588396829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66666592591433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33333296295566 + 33333296295567.

It is an arithmetic number, because the mean of its divisors is an integer number (33333296295567).

Almost surely, 2^{66666592591133} is an apocalyptic number.

It is an amenable number.

66666592591133 is a deficient number, since it is larger than the sum of its proper divisors (1).

66666592591133 is an equidigital number, since it uses as much as digits as its factorization.

66666592591133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283435200, while the sum is 68.

The spelling of 66666592591133 in words is "sixty-six trillion, six hundred sixty-six billion, five hundred ninety-two million, five hundred ninety-one thousand, one hundred thirty-three".