11857593161 has 2 divisors, whose sum is σ = 11857593162. Its totient is φ = 11857593160.

The previous prime is 11857593133. The next prime is 11857593179. The reversal of 11857593161 is 16139575811.

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., 11784405136 + 73188025 = 108556^2 + 8555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11857593161 is a prime.

It is not a weakly prime, because it can be changed into another prime (11857593191) 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, 5928796580 + 5928796581.

It is an arithmetic number, because the mean of its divisors is an integer number (5928796581).

Almost surely, 2^11857593161 is an apocalyptic number.

It is an amenable number.

11857593161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11857593161 is an equidigital number, since it uses as much as digits as its factorization.

11857593161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 47.

The spelling of 11857593161 in words is "eleven billion, eight hundred fifty-seven million, five hundred ninety-three thousand, one hundred sixty-one".