66667074073337 has 2 divisors, whose sum is σ = 66667074073338. Its totient is φ = 66667074073336.

The previous prime is 66667074073309. The next prime is 66667074073343. The reversal of 66667074073337 is 73337047076666.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36774655052521 + 29892419020816 = 6064211^2 + 5467396^2 .

It is a cyclic number.

It is not a de Polignac number, because 66667074073337 - 2³² = 66662779106041 is a prime.

It is not a weakly prime, because it can be changed into another prime (66667074073037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33333537036668 + 33333537036669.

It is an arithmetic number, because the mean of its divisors is an integer number (33333537036669).

Almost surely, 2^{66667074073337} is an apocalyptic number.

It is an amenable number.

66667074073337 is a deficient number, since it is larger than the sum of its proper divisors (1).

66667074073337 is an equidigital number, since it uses as much as digits as its factorization.

66667074073337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336063168, while the sum is 65.

The spelling of 66667074073337 in words is "sixty-six trillion, six hundred sixty-seven billion, seventy-four million, seventy-three thousand, three hundred thirty-seven".