163421166634 has 24 divisors (see below), whose sum is σ = 285291893124. Its totient is φ = 69912796800.

The previous prime is 163421166613. The next prime is 163421166641. The reversal of 163421166634 is 436661124361.

163421166634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 163373598025 + 47568609 = 404195^2 + 6897^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19857477 + ... + 19865704.

Almost surely, 2^163421166634 is an apocalyptic number.

163421166634 is a deficient number, since it is larger than the sum of its proper divisors (121870726490).

163421166634 is a wasteful number, since it uses less digits than its factorization.

163421166634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39723222 (or 39723211 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The spelling of 163421166634 in words is "one hundred sixty-three billion, four hundred twenty-one million, one hundred sixty-six thousand, six hundred thirty-four".