243044015220 has 72 divisors (see below), whose sum is σ = 752919358464. Its totient is φ = 63432762048.

The previous prime is 243044015189. The next prime is 243044015237. The reversal of 243044015220 is 22510440342.

243044015220 is a `hidden beast` number, since 2 + 4 + 30 + 4 + 401 + 5 + 220 = 666.

243044015220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 14355844 + ... + 14372763.

It is an arithmetic number, because the mean of its divisors is an integer number (10457213312).

Almost surely, 2^243044015220 is an apocalyptic number.

243044015220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243044015220 is an abundant number, since it is smaller than the sum of its proper divisors (509875343244).

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

243044015220 is a wasteful number, since it uses less digits than its factorization.

243044015220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28728669 (or 28728664 counting only the distinct ones).

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

Adding to 243044015220 its reverse (22510440342), we get a palindrome (265554455562).

The spelling of 243044015220 in words is "two hundred forty-three billion, forty-four million, fifteen thousand, two hundred twenty".