1123617165571 has 2 divisors, whose sum is σ = 1123617165572. Its totient is φ = 1123617165570.

The previous prime is 1123617165499. The next prime is 1123617165617. The reversal of 1123617165571 is 1755617163211.

It is an a-pointer prime, because the next prime (1123617165617) can be obtained adding 1123617165571 to its sum of digits (46).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123617165571 - 2¹¹ = 1123617163523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123617165271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561808582785 + 561808582786.

It is an arithmetic number, because the mean of its divisors is an integer number (561808582786).

Almost surely, 2^{1123617165571} is an apocalyptic number.

1123617165571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123617165571 is an equidigital number, since it uses as much as digits as its factorization.

1123617165571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 46.

The spelling of 1123617165571 in words is "one trillion, one hundred twenty-three billion, six hundred seventeen million, one hundred sixty-five thousand, five hundred seventy-one".