1105605605173 has 2 divisors, whose sum is σ = 1105605605174. Its totient is φ = 1105605605172.

The previous prime is 1105605605131. The next prime is 1105605605191. The reversal of 1105605605173 is 3715065065011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1068178059729 + 37427545444 = 1033527^2 + 193462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105605605173 - 2⁹ = 1105605604661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105605605473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552802802586 + 552802802587.

It is an arithmetic number, because the mean of its divisors is an integer number (552802802587).

Almost surely, 2^{1105605605173} is an apocalyptic number.

It is an amenable number.

1105605605173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105605605173 is an equidigital number, since it uses as much as digits as its factorization.

1105605605173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 40.

The spelling of 1105605605173 in words is "one trillion, one hundred five billion, six hundred five million, six hundred five thousand, one hundred seventy-three".