163454222561 has 16 divisors (see below), whose sum is σ = 196982332800. Its totient is φ = 132496414848.

The previous prime is 163454222537. The next prime is 163454222609. The reversal of 163454222561 is 165222454361.

It is not a de Polignac number, because 163454222561 - 2³⁰ = 162380480737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163454222501) 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, 1004270 + ... + 1155623.

It is an arithmetic number, because the mean of its divisors is an integer number (12311395800).

Almost surely, 2^163454222561 is an apocalyptic number.

It is an amenable number.

163454222561 is a deficient number, since it is larger than the sum of its proper divisors (33528110239).

163454222561 is a wasteful number, since it uses less digits than its factorization.

163454222561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160488.

The product of its digits is 345600, while the sum is 41.

The spelling of 163454222561 in words is "one hundred sixty-three billion, four hundred fifty-four million, two hundred twenty-two thousand, five hundred sixty-one".