163216633161 has 4 divisors (see below), whose sum is σ = 217622177552. Its totient is φ = 108811088772.

The previous prime is 163216633159. The next prime is 163216633163. The reversal of 163216633161 is 161336612361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (163216633159) and next prime (163216633163).

It is not a de Polignac number, because 163216633161 - 2¹ = 163216633159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163216633163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27202772191 + ... + 27202772196.

It is an arithmetic number, because the mean of its divisors is an integer number (54405544388).

Almost surely, 2^163216633161 is an apocalyptic number.

It is an amenable number.

163216633161 is a deficient number, since it is larger than the sum of its proper divisors (54405544391).

163216633161 is an equidigital number, since it uses as much as digits as its factorization.

163216633161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54405544390.

The product of its digits is 69984, while the sum is 39.

The spelling of 163216633161 in words is "one hundred sixty-three billion, two hundred sixteen million, six hundred thirty-three thousand, one hundred sixty-one".