219945223723 has 2 divisors, whose sum is σ = 219945223724. Its totient is φ = 219945223722.

The previous prime is 219945223669. The next prime is 219945223739. The reversal of 219945223723 is 327322549912.

219945223723 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 219945223723 - 2²⁹ = 219408352811 is a prime.

It is not a weakly prime, because it can be changed into another prime (219945223123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109972611861 + 109972611862.

It is an arithmetic number, because the mean of its divisors is an integer number (109972611862).

Almost surely, 2^219945223723 is an apocalyptic number.

219945223723 is a deficient number, since it is larger than the sum of its proper divisors (1).

219945223723 is an equidigital number, since it uses as much as digits as its factorization.

219945223723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The spelling of 219945223723 in words is "two hundred nineteen billion, nine hundred forty-five million, two hundred twenty-three thousand, seven hundred twenty-three".