163446040161 has 8 divisors (see below), whose sum is σ = 242142281760. Its totient is φ = 108964026756.

The previous prime is 163446040159. The next prime is 163446040171. The reversal of 163446040161 is 161040644361.

163446040161 is a `hidden beast` number, since 1 + 6 + 3 + 44 + 604 + 0 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 163446040161 - 2¹ = 163446040159 is a prime.

It is a super-2 number, since 2×163446040161² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163446040111) 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, 3026778495 + ... + 3026778548.

It is an arithmetic number, because the mean of its divisors is an integer number (30267785220).

Almost surely, 2^163446040161 is an apocalyptic number.

It is an amenable number.

163446040161 is a deficient number, since it is larger than the sum of its proper divisors (78696241599).

163446040161 is an equidigital number, since it uses as much as digits as its factorization.

163446040161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6053557052 (or 6053557046 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 163446040161 in words is "one hundred sixty-three billion, four hundred forty-six million, forty thousand, one hundred sixty-one".