30444000173 has 2 divisors, whose sum is σ = 30444000174. Its totient is φ = 30444000172.

The previous prime is 30444000121. The next prime is 30444000187. The reversal of 30444000173 is 37100044403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29286503689 + 1157496484 = 171133^2 + 34022^2 .

It is a cyclic number.

It is not a de Polignac number, because 30444000173 - 2²⁰ = 30442951597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30444000073) 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, 15222000086 + 15222000087.

It is an arithmetic number, because the mean of its divisors is an integer number (15222000087).

Almost surely, 2^30444000173 is an apocalyptic number.

It is an amenable number.

30444000173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30444000173 is an equidigital number, since it uses as much as digits as its factorization.

30444000173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 30444000173 its reverse (37100044403), we get a palindrome (67544044576).

The spelling of 30444000173 in words is "thirty billion, four hundred forty-four million, one hundred seventy-three", and thus it is an aban number.