161322104243245 has 16 divisors (see below), whose sum is σ = 220367269671552. Its totient is φ = 112224072516160.

The previous prime is 161322104243219. The next prime is 161322104243263. The reversal of 161322104243245 is 542342401223161.

It is not a de Polignac number, because 161322104243245 - 2⁵ = 161322104243213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161322104243198 and 161322104243207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63763676302 + ... + 63763678831.

It is an arithmetic number, because the mean of its divisors is an integer number (13772954354472).

Almost surely, 2^{161322104243245} is an apocalyptic number.

It is an amenable number.

161322104243245 is a deficient number, since it is larger than the sum of its proper divisors (59045165428307).

161322104243245 is a wasteful number, since it uses less digits than its factorization.

161322104243245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127527355172.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 161322104243245 in words is "one hundred sixty-one trillion, three hundred twenty-two billion, one hundred four million, two hundred forty-three thousand, two hundred forty-five".