163534405543604 has 24 divisors (see below), whose sum is σ = 288148739954880. Its totient is φ = 81207955538496.

The previous prime is 163534405543589. The next prime is 163534405543637. The reversal of 163534405543604 is 406345504435361.

It is a happy number.

163534405543604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219804632 + ... + 220547375.

It is an arithmetic number, because the mean of its divisors is an integer number (12006197498120).

Almost surely, 2^{163534405543604} is an apocalyptic number.

It is an amenable number.

163534405543604 is a deficient number, since it is larger than the sum of its proper divisors (124614334411276).

163534405543604 is a wasteful number, since it uses less digits than its factorization.

163534405543604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440352647 (or 440352645 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 53.

Adding to 163534405543604 its reverse (406345504435361), we get a palindrome (569879909978965).

The spelling of 163534405543604 in words is "one hundred sixty-three trillion, five hundred thirty-four billion, four hundred five million, five hundred forty-three thousand, six hundred four".