66997626467339 has 2 divisors, whose sum is σ = 66997626467340. Its totient is φ = 66997626467338.

The previous prime is 66997626467257. The next prime is 66997626467351. The reversal of 66997626467339 is 93376462679966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66997626467339 - 2¹⁶ = 66997626401803 is a prime.

It is not a weakly prime, because it can be changed into another prime (66997626467039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33498813233669 + 33498813233670.

It is an arithmetic number, because the mean of its divisors is an integer number (33498813233670).

Almost surely, 2^{66997626467339} is an apocalyptic number.

66997626467339 is a deficient number, since it is larger than the sum of its proper divisors (1).

66997626467339 is an equidigital number, since it uses as much as digits as its factorization.

66997626467339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19999187712, while the sum is 83.

The spelling of 66997626467339 in words is "sixty-six trillion, nine hundred ninety-seven billion, six hundred twenty-six million, four hundred sixty-seven thousand, three hundred thirty-nine".