11071205161 has 2 divisors, whose sum is σ = 11071205162. Its totient is φ = 11071205160.

The previous prime is 11071205059. The next prime is 11071205177. The reversal of 11071205161 is 16150217011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5965245225 + 5105959936 = 77235^2 + 71456^2 .

It is an emirp because it is prime and its reverse (16150217011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11071205161 - 2²⁹ = 10534334249 is a prime.

It is not a weakly prime, because it can be changed into another prime (11071205261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535602580 + 5535602581.

It is an arithmetic number, because the mean of its divisors is an integer number (5535602581).

Almost surely, 2^11071205161 is an apocalyptic number.

It is an amenable number.

11071205161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11071205161 is an equidigital number, since it uses as much as digits as its factorization.

11071205161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 25.

The spelling of 11071205161 in words is "eleven billion, seventy-one million, two hundred five thousand, one hundred sixty-one".