1123440000173 has 2 divisors, whose sum is σ = 1123440000174. Its totient is φ = 1123440000172.

The previous prime is 1123440000149. The next prime is 1123440000271. The reversal of 1123440000173 is 3710000443211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940459671529 + 182980328644 = 969773^2 + 427762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123440000173 - 2¹⁶ = 1123439934637 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 (1123440000373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561720000086 + 561720000087.

It is an arithmetic number, because the mean of its divisors is an integer number (561720000087).

Almost surely, 2^{1123440000173} is an apocalyptic number.

It is an amenable number.

1123440000173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123440000173 is an equidigital number, since it uses as much as digits as its factorization.

1123440000173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 1123440000173 its reverse (3710000443211), we get a palindrome (4833440443384).

The spelling of 1123440000173 in words is "one trillion, one hundred twenty-three billion, four hundred forty million, one hundred seventy-three", and thus it is an aban number.