163521934548 has 24 divisors (see below), whose sum is σ = 436058492352. Its totient is φ = 46720552704.

The previous prime is 163521934517. The next prime is 163521934669. The reversal of 163521934548 is 845439125361.

It is a self number, because there is not a number n which added to its sum of digits gives 163521934548.

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 7 ways as a sum of consecutive naturals, for example, 973344765 + ... + 973344932.

It is an arithmetic number, because the mean of its divisors is an integer number (18169103848).

Almost surely, 2^163521934548 is an apocalyptic number.

It is an amenable number.

163521934548 is an abundant number, since it is smaller than the sum of its proper divisors (272536557804).

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

163521934548 is a wasteful number, since it uses less digits than its factorization.

163521934548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946689711 (or 1946689709 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 51.

The spelling of 163521934548 in words is "one hundred sixty-three billion, five hundred twenty-one million, nine hundred thirty-four thousand, five hundred forty-eight".