12173444441 has 2 divisors, whose sum is σ = 12173444442. Its totient is φ = 12173444440.

The previous prime is 12173444383. The next prime is 12173444471. The reversal of 12173444441 is 14444437121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9063040000 + 3110404441 = 95200^2 + 55771^2 .

It is a cyclic number.

It is not a de Polignac number, because 12173444441 - 2⁶ = 12173444377 is a prime.

It is a super-2 number, since 2×12173444441² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12173444471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6086722220 + 6086722221.

It is an arithmetic number, because the mean of its divisors is an integer number (6086722221).

Almost surely, 2^12173444441 is an apocalyptic number.

It is an amenable number.

12173444441 is a deficient number, since it is larger than the sum of its proper divisors (1).

12173444441 is an equidigital number, since it uses as much as digits as its factorization.

12173444441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 35.

The spelling of 12173444441 in words is "twelve billion, one hundred seventy-three million, four hundred forty-four thousand, four hundred forty-one".