161461622122 has 8 divisors (see below), whose sum is σ = 244590378372. Its totient is φ = 79931496000.

The previous prime is 161461622059. The next prime is 161461622131. The reversal of 161461622122 is 221226164161.

It can be written as a sum of positive squares in 2 ways, for example, as 137619482841 + 23842139281 = 370971^2 + 154409^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399657279 + ... + 399657682.

Almost surely, 2^161461622122 is an apocalyptic number.

161461622122 is a deficient number, since it is larger than the sum of its proper divisors (83128756250).

161461622122 is a wasteful number, since it uses less digits than its factorization.

161461622122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799315064.

The product of its digits is 13824, while the sum is 34.

Adding to 161461622122 its reverse (221226164161), we get a palindrome (382687786283).

The spelling of 161461622122 in words is "one hundred sixty-one billion, four hundred sixty-one million, six hundred twenty-two thousand, one hundred twenty-two".