445231472122161 has 16 divisors (see below), whose sum is σ = 663970407291520. Its totient is φ = 294855279548400.

The previous prime is 445231472122159. The next prime is 445231472122201. The reversal of 445231472122161 is 161221274132544.

445231472122161 is a `hidden beast` number, since 4 + 4 + 5 + 2 + 3 + 1 + 472 + 12 + 2 + 161 = 666.

It is not a de Polignac number, because 445231472122161 - 2¹ = 445231472122159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445231472102161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54602825470 + ... + 54602833623.

It is an arithmetic number, because the mean of its divisors is an integer number (41498150455720).

Almost surely, 2^{445231472122161} is an apocalyptic number.

It is an amenable number.

445231472122161 is a deficient number, since it is larger than the sum of its proper divisors (218738935169359).

445231472122161 is a wasteful number, since it uses less digits than its factorization.

445231472122161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109205659253 (or 109205659247 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 445231472122161 in words is "four hundred forty-five trillion, two hundred thirty-one billion, four hundred seventy-two million, one hundred twenty-two thousand, one hundred sixty-one".