220896642173 has 2 divisors, whose sum is σ = 220896642174. Its totient is φ = 220896642172.

The previous prime is 220896642149. The next prime is 220896642199. The reversal of 220896642173 is 371246698022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133858661689 + 87037980484 = 365867^2 + 295022^2 .

It is a cyclic number.

It is not a de Polignac number, because 220896642173 - 2¹² = 220896638077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220896642103) 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, 110448321086 + 110448321087.

It is an arithmetic number, because the mean of its divisors is an integer number (110448321087).

Almost surely, 2^220896642173 is an apocalyptic number.

It is an amenable number.

220896642173 is a deficient number, since it is larger than the sum of its proper divisors (1).

220896642173 is an equidigital number, since it uses as much as digits as its factorization.

220896642173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 220896642173 in words is "two hundred twenty billion, eight hundred ninety-six million, six hundred forty-two thousand, one hundred seventy-three".