66850235519723 has 2 divisors, whose sum is σ = 66850235519724. Its totient is φ = 66850235519722.

The previous prime is 66850235519681. The next prime is 66850235519729. The reversal of 66850235519723 is 32791553205866.

It is a happy number.

66850235519723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66850235519723 - 2¹⁴ = 66850235503339 is a prime.

It is not a weakly prime, because it can be changed into another prime (66850235519729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33425117759861 + 33425117759862.

It is an arithmetic number, because the mean of its divisors is an integer number (33425117759862).

Almost surely, 2^{66850235519723} is an apocalyptic number.

66850235519723 is a deficient number, since it is larger than the sum of its proper divisors (1).

66850235519723 is an equidigital number, since it uses as much as digits as its factorization.

66850235519723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648000, while the sum is 62.

The spelling of 66850235519723 in words is "sixty-six trillion, eight hundred fifty billion, two hundred thirty-five million, five hundred nineteen thousand, seven hundred twenty-three".