161022442012 has 6 divisors (see below), whose sum is σ = 281789273528. Its totient is φ = 80511221004.

The previous prime is 161022441991. The next prime is 161022442027. The reversal of 161022442012 is 210244220161.

It is a congruent number.

It is an unprimeable number.

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, 20127805248 + ... + 20127805255.

Almost surely, 2^161022442012 is an apocalyptic number.

It is an amenable number.

161022442012 is a deficient number, since it is larger than the sum of its proper divisors (120766831516).

161022442012 is a wasteful number, since it uses less digits than its factorization.

161022442012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40255610507 (or 40255610505 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 161022442012 its reverse (210244220161), we get a palindrome (371266662173).

The spelling of 161022442012 in words is "one hundred sixty-one billion, twenty-two million, four hundred forty-two thousand, twelve".