161405224022 has 8 divisors (see below), whose sum is σ = 276694669776. Its totient is φ = 69173667432.

The previous prime is 161405224003. The next prime is 161405224033. The reversal of 161405224022 is 220422504161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5764472273 + ... + 5764472300.

It is an arithmetic number, because the mean of its divisors is an integer number (34586833722).

Almost surely, 2^161405224022 is an apocalyptic number.

161405224022 is a deficient number, since it is larger than the sum of its proper divisors (115289445754).

161405224022 is a wasteful number, since it uses less digits than its factorization.

161405224022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11528944582.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 161405224022 its reverse (220422504161), we get a palindrome (381827728183).

The spelling of 161405224022 in words is "one hundred sixty-one billion, four hundred five million, two hundred twenty-four thousand, twenty-two".