66768596298137 has 2 divisors, whose sum is σ = 66768596298138. Its totient is φ = 66768596298136.

The previous prime is 66768596298119. The next prime is 66768596298281. The reversal of 66768596298137 is 73189269586766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56861688967561 + 9906907330576 = 7540669^2 + 3147524^2 .

It is a cyclic number.

It is not a de Polignac number, because 66768596298137 - 2¹⁰ = 66768596297113 is a prime.

It is not a weakly prime, because it can be changed into another prime (66768596298637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33384298149068 + 33384298149069.

It is an arithmetic number, because the mean of its divisors is an integer number (33384298149069).

Almost surely, 2^{66768596298137} is an apocalyptic number.

It is an amenable number.

66768596298137 is a deficient number, since it is larger than the sum of its proper divisors (1).

66768596298137 is an equidigital number, since it uses as much as digits as its factorization.

66768596298137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9876142080, while the sum is 83.

The spelling of 66768596298137 in words is "sixty-six trillion, seven hundred sixty-eight billion, five hundred ninety-six million, two hundred ninety-eight thousand, one hundred thirty-seven".