161452246205111 has 4 divisors (see below), whose sum is σ = 167019565039800. Its totient is φ = 155884927370424.

The previous prime is 161452246205051. The next prime is 161452246205113. The reversal of 161452246205111 is 111502642254161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161452246205111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161452246205113) 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 in 3 ways as a sum of consecutive naturals, for example, 2783659417301 + ... + 2783659417358.

It is an arithmetic number, because the mean of its divisors is an integer number (41754891259950).

Almost surely, 2^{161452246205111} is an apocalyptic number.

161452246205111 is a deficient number, since it is larger than the sum of its proper divisors (5567318834689).

161452246205111 is an equidigital number, since it uses as much as digits as its factorization.

161452246205111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567318834688.

The product of its (nonzero) digits is 115200, while the sum is 41.

Adding to 161452246205111 its reverse (111502642254161), we get a palindrome (272954888459272).

The spelling of 161452246205111 in words is "one hundred sixty-one trillion, four hundred fifty-two billion, two hundred forty-six million, two hundred five thousand, one hundred eleven".