163442491161 has 8 divisors (see below), whose sum is σ = 221495835264. Its totient is φ = 107175403920.

The previous prime is 163442491153. The next prime is 163442491207. The reversal of 163442491161 is 161194244361.

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

It is not a de Polignac number, because 163442491161 - 2³ = 163442491153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163442491561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446564001 + ... + 446564366.

It is an arithmetic number, because the mean of its divisors is an integer number (27686979408).

Almost surely, 2^163442491161 is an apocalyptic number.

It is an amenable number.

163442491161 is a deficient number, since it is larger than the sum of its proper divisors (58053344103).

163442491161 is an equidigital number, since it uses as much as digits as its factorization.

163442491161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893128431.

The product of its digits is 124416, while the sum is 42.

The spelling of 163442491161 in words is "one hundred sixty-three billion, four hundred forty-two million, four hundred ninety-one thousand, one hundred sixty-one".