30421446173 has 2 divisors, whose sum is σ = 30421446174. Its totient is φ = 30421446172.

The previous prime is 30421446151. The next prime is 30421446197. The reversal of 30421446173 is 37164412403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27146516644 + 3274929529 = 164762^2 + 57227^2 .

It is a cyclic number.

It is not a de Polignac number, because 30421446173 - 2⁶ = 30421446109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30421446673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210723086 + 15210723087.

It is an arithmetic number, because the mean of its divisors is an integer number (15210723087).

Almost surely, 2^30421446173 is an apocalyptic number.

It is an amenable number.

30421446173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30421446173 is an equidigital number, since it uses as much as digits as its factorization.

30421446173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

Adding to 30421446173 its reverse (37164412403), we get a palindrome (67585858576).

The spelling of 30421446173 in words is "thirty billion, four hundred twenty-one million, four hundred forty-six thousand, one hundred seventy-three".