161050518791 has 2 divisors, whose sum is σ = 161050518792. Its totient is φ = 161050518790.

The previous prime is 161050518773. The next prime is 161050518803. The reversal of 161050518791 is 197815050161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161050518791 - 2²² = 161046324487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161050518191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80525259395 + 80525259396.

It is an arithmetic number, because the mean of its divisors is an integer number (80525259396).

Almost surely, 2^161050518791 is an apocalyptic number.

161050518791 is a deficient number, since it is larger than the sum of its proper divisors (1).

161050518791 is an equidigital number, since it uses as much as digits as its factorization.

161050518791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 44.

The spelling of 161050518791 in words is "one hundred sixty-one billion, fifty million, five hundred eighteen thousand, seven hundred ninety-one".