243404145000 has 120 divisors (see below), whose sum is σ = 823760913690. Its totient is φ = 64907760000.

The previous prime is 243404144981. The next prime is 243404145001. The reversal of 243404145000 is 541404342.

It is a happy number.

243404145000 is a `hidden beast` number, since 243 + 4 + 0 + 414 + 5 + 0 + 0 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 18255792996 + 225148352004 = 135114^2 + 474498^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (243404145001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2659491 + ... + 2749490.

Almost surely, 2^243404145000 is an apocalyptic number.

243404145000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243404145000 is an abundant number, since it is smaller than the sum of its proper divisors (580356768690).

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

243404145000 is a wasteful number, since it uses less digits than its factorization.

243404145000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409013 (or 5408991 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 243404145000 its reverse (541404342), we get a palindrome (243945549342).

The spelling of 243404145000 in words is "two hundred forty-three billion, four hundred four million, one hundred forty-five thousand".