163242081664 has 32 divisors (see below), whose sum is σ = 344338770600. Its totient is φ = 76819802112.

The previous prime is 163242081643. The next prime is 163242081697. The reversal of 163242081664 is 466180242361.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 163242081664.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37507494 + ... + 37511845.

Almost surely, 2^163242081664 is an apocalyptic number.

It is an amenable number.

163242081664 is an abundant number, since it is smaller than the sum of its proper divisors (181096688936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163242081664 is an equidigital number, since it uses as much as digits as its factorization.

163242081664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75019370 (or 75019358 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 163242081664 in words is "one hundred sixty-three billion, two hundred forty-two million, eighty-one thousand, six hundred sixty-four".