73224342161 has 2 divisors, whose sum is σ = 73224342162. Its totient is φ = 73224342160.

The previous prime is 73224342137. The next prime is 73224342209. The reversal of 73224342161 is 16124342237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53439106561 + 19785235600 = 231169^2 + 140660^2 .

It is a cyclic number.

It is not a de Polignac number, because 73224342161 - 2¹⁰ = 73224341137 is a prime.

It is a super-2 number, since 2×73224342161² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73224342461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36612171080 + 36612171081.

It is an arithmetic number, because the mean of its divisors is an integer number (36612171081).

Almost surely, 2^73224342161 is an apocalyptic number.

It is an amenable number.

73224342161 is a deficient number, since it is larger than the sum of its proper divisors (1).

73224342161 is an equidigital number, since it uses as much as digits as its factorization.

73224342161 is an odious number, because the sum of its binary digits is odd.

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

Adding to 73224342161 its reverse (16124342237), we get a palindrome (89348684398).

The spelling of 73224342161 in words is "seventy-three billion, two hundred twenty-four million, three hundred forty-two thousand, one hundred sixty-one".