243169193400 has 1152 divisors, whose sum is σ = 1012194144000. Its totient is φ = 47795650560.

The previous prime is 243169193363. The next prime is 243169193401. The reversal of 243169193400 is 4391961342.

243169193400 is digitally balanced in base 2, 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 (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243169193401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 275389359 + ... + 275390241.

It is an arithmetic number, because the mean of its divisors is an integer number (878640750).

Almost surely, 2^243169193400 is an apocalyptic number.

243169193400 is a gapful number since it is divisible by the number (20) 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 243169193400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506097072000).

243169193400 is an abundant number, since it is smaller than the sum of its proper divisors (769024950600).

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

243169193400 is a wasteful number, since it uses less digits than its factorization.

243169193400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 243169193400 in words is "two hundred forty-three billion, one hundred sixty-nine million, one hundred ninety-three thousand, four hundred".