163564031100 has 72 divisors (see below), whose sum is σ = 473306425200. Its totient is φ = 43611438080.

The previous prime is 163564031041. The next prime is 163564031107. The reversal of 163564031100 is 1130465361.

163564031100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163564031107) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2623894 + ... + 2685506.

It is an arithmetic number, because the mean of its divisors is an integer number (6573700350).

Almost surely, 2^163564031100 is an apocalyptic number.

163564031100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163564031100 is an abundant number, since it is smaller than the sum of its proper divisors (309742394100).

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

163564031100 is a wasteful number, since it uses less digits than its factorization.

163564031100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70479 (or 70472 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 163564031100 its reverse (1130465361), we get a palindrome (164694496461).

The spelling of 163564031100 in words is "one hundred sixty-three billion, five hundred sixty-four million, thirty-one thousand, one hundred".