66673734041 has 2 divisors, whose sum is σ = 66673734042. Its totient is φ = 66673734040.

The previous prime is 66673734011. The next prime is 66673734047. The reversal of 66673734041 is 14043737666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66407228416 + 266505625 = 257696^2 + 16325^2 .

It is a cyclic number.

It is not a de Polignac number, because 66673734041 - 2¹⁴ = 66673717657 is a prime.

It is not a weakly prime, because it can be changed into another prime (66673734047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33336867020 + 33336867021.

It is an arithmetic number, because the mean of its divisors is an integer number (33336867021).

Almost surely, 2^66673734041 is an apocalyptic number.

It is an amenable number.

66673734041 is a deficient number, since it is larger than the sum of its proper divisors (1).

66673734041 is an equidigital number, since it uses as much as digits as its factorization.

66673734041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 66673734041 in words is "sixty-six billion, six hundred seventy-three million, seven hundred thirty-four thousand, forty-one".