163604432550100 has 216 divisors, whose sum is σ = 394180588015200. Its totient is φ = 58845033273600.

The previous prime is 163604432550073. The next prime is 163604432550173. The reversal of 163604432550100 is 1055234406361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 60442735 + ... + 63091465.

It is an arithmetic number, because the mean of its divisors is an integer number (1824910129700).

Almost surely, 2^{163604432550100} is an apocalyptic number.

163604432550100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163604432550100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197090294007600).

163604432550100 is an abundant number, since it is smaller than the sum of its proper divisors (230576155465100).

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

163604432550100 is a wasteful number, since it uses less digits than its factorization.

163604432550100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648871 (or 2648845 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 163604432550100 its reverse (1055234406361), we get a palindrome (164659666956461).

The spelling of 163604432550100 in words is "one hundred sixty-three trillion, six hundred four billion, four hundred thirty-two million, five hundred fifty thousand, one hundred".