66031189497239 has 2 divisors, whose sum is σ = 66031189497240. Its totient is φ = 66031189497238.

The previous prime is 66031189497199. The next prime is 66031189497257. The reversal of 66031189497239 is 93279498113066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66031189497239 - 2⁸ = 66031189496983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66031189497269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33015594748619 + 33015594748620.

It is an arithmetic number, because the mean of its divisors is an integer number (33015594748620).

Almost surely, 2^{66031189497239} is an apocalyptic number.

66031189497239 is a deficient number, since it is larger than the sum of its proper divisors (1).

66031189497239 is an equidigital number, since it uses as much as digits as its factorization.

66031189497239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105815808, while the sum is 68.

The spelling of 66031189497239 in words is "sixty-six trillion, thirty-one billion, one hundred eighty-nine million, four hundred ninety-seven thousand, two hundred thirty-nine".