66734124800191 has 2 divisors, whose sum is σ = 66734124800192. Its totient is φ = 66734124800190.

The previous prime is 66734124800153. The next prime is 66734124800227. The reversal of 66734124800191 is 19100842143766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66734124800191 - 2²³ = 66734116411583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66734124800111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33367062400095 + 33367062400096.

It is an arithmetic number, because the mean of its divisors is an integer number (33367062400096).

Almost surely, 2^{66734124800191} is an apocalyptic number.

66734124800191 is a deficient number, since it is larger than the sum of its proper divisors (1).

66734124800191 is an equidigital number, since it uses as much as digits as its factorization.

66734124800191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 66734124800191 in words is "sixty-six trillion, seven hundred thirty-four billion, one hundred twenty-four million, eight hundred thousand, one hundred ninety-one".