161115646033 has 2 divisors, whose sum is σ = 161115646034. Its totient is φ = 161115646032.

The previous prime is 161115645961. The next prime is 161115646051. The reversal of 161115646033 is 330646511161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152594140689 + 8521505344 = 390633^2 + 92312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161115646033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161115645983 and 161115646001.

It is not a weakly prime, because it can be changed into another prime (161115646333) 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, 80557823016 + 80557823017.

It is an arithmetic number, because the mean of its divisors is an integer number (80557823017).

Almost surely, 2^161115646033 is an apocalyptic number.

It is an amenable number.

161115646033 is a deficient number, since it is larger than the sum of its proper divisors (1).

161115646033 is an equidigital number, since it uses as much as digits as its factorization.

161115646033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 161115646033 in words is "one hundred sixty-one billion, one hundred fifteen million, six hundred forty-six thousand, thirty-three".