12271745173 has 2 divisors, whose sum is σ = 12271745174. Its totient is φ = 12271745172.

The previous prime is 12271745147. The next prime is 12271745207. The reversal of 12271745173 is 37154717221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12134784964 + 136960209 = 110158^2 + 11703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12271745173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12271745573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6135872586 + 6135872587.

It is an arithmetic number, because the mean of its divisors is an integer number (6135872587).

Almost surely, 2^12271745173 is an apocalyptic number.

It is an amenable number.

12271745173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12271745173 is an equidigital number, since it uses as much as digits as its factorization.

12271745173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The spelling of 12271745173 in words is "twelve billion, two hundred seventy-one million, seven hundred forty-five thousand, one hundred seventy-three".