161322665301 has 12 divisors (see below), whose sum is σ = 266310431712. Its totient is φ = 92184380136.

The previous prime is 161322665293. The next prime is 161322665351. The reversal of 161322665301 is 103566223161.

161322665301 is a `hidden beast` number, since 1 + 61 + 3 + 2 + 2 + 66 + 530 + 1 = 666.

It is not a de Polignac number, because 161322665301 - 2³ = 161322665293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161322665351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1280338551 + ... + 1280338676.

It is an arithmetic number, because the mean of its divisors is an integer number (22192535976).

Almost surely, 2^161322665301 is an apocalyptic number.

It is an amenable number.

161322665301 is a deficient number, since it is larger than the sum of its proper divisors (104987766411).

161322665301 is a wasteful number, since it uses less digits than its factorization.

161322665301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560677240 (or 2560677237 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 161322665301 its reverse (103566223161), we get a palindrome (264888888462).

The spelling of 161322665301 in words is "one hundred sixty-one billion, three hundred twenty-two million, six hundred sixty-five thousand, three hundred one".