8423145161 has 2 divisors, whose sum is σ = 8423145162. Its totient is φ = 8423145160.

The previous prime is 8423145139. The next prime is 8423145217. The reversal of 8423145161 is 1615413248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7262448400 + 1160696761 = 85220^2 + 34069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8423145161 is a prime.

It is not a weakly prime, because it can be changed into another prime (8423145361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211572580 + 4211572581.

It is an arithmetic number, because the mean of its divisors is an integer number (4211572581).

Almost surely, 2^8423145161 is an apocalyptic number.

It is an amenable number.

8423145161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8423145161 is an equidigital number, since it uses as much as digits as its factorization.

8423145161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 8423145161 is about 91777.6942453884. The cubic root of 8423145161 is about 2034.6580377491.

The spelling of 8423145161 in words is "eight billion, four hundred twenty-three million, one hundred forty-five thousand, one hundred sixty-one".