220128915173 has 2 divisors, whose sum is σ = 220128915174. Its totient is φ = 220128915172.

The previous prime is 220128915137. The next prime is 220128915187. The reversal of 220128915173 is 371519821022.

220128915173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (220128915137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217572803809 + 2556111364 = 466447^2 + 50558^2 .

It is a cyclic number.

It is not a de Polignac number, because 220128915173 - 2¹⁰ = 220128914149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220128915173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220128912173) 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, 110064457586 + 110064457587.

It is an arithmetic number, because the mean of its divisors is an integer number (110064457587).

Almost surely, 2^220128915173 is an apocalyptic number.

It is an amenable number.

220128915173 is a deficient number, since it is larger than the sum of its proper divisors (1).

220128915173 is an equidigital number, since it uses as much as digits as its factorization.

220128915173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 220128915173 in words is "two hundred twenty billion, one hundred twenty-eight million, nine hundred fifteen thousand, one hundred seventy-three".