11042343161 has 2 divisors, whose sum is σ = 11042343162. Its totient is φ = 11042343160.

The previous prime is 11042343121. The next prime is 11042343167. The reversal of 11042343161 is 16134324011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8979457600 + 2062885561 = 94760^2 + 45419^2 .

It is a cyclic number.

It is not a de Polignac number, because 11042343161 - 2¹⁰ = 11042342137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11042343161.

It is not a weakly prime, because it can be changed into another prime (11042343167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5521171580 + 5521171581.

It is an arithmetic number, because the mean of its divisors is an integer number (5521171581).

Almost surely, 2^11042343161 is an apocalyptic number.

It is an amenable number.

11042343161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11042343161 is an equidigital number, since it uses as much as digits as its factorization.

11042343161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 11042343161 its reverse (16134324011), we get a palindrome (27176667172).

The spelling of 11042343161 in words is "eleven billion, forty-two million, three hundred forty-three thousand, one hundred sixty-one".