243000000000020 has 48 divisors (see below), whose sum is σ = 557747248601088. Its totient is φ = 88531309294080.

The previous prime is 243000000000019. The next prime is 243000000000049. The reversal of 243000000000020 is 20000000000342.

It is a junction number, because it is equal to n+sod(n) for n = 242999999999920 and 243000000000010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11527503692 + ... + 11527524771.

It is an arithmetic number, because the mean of its divisors is an integer number (11619734345856).

Almost surely, 2^{243000000000020} is an apocalyptic number.

243000000000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243000000000020 is an abundant number, since it is smaller than the sum of its proper divisors (314747248601068).

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

243000000000020 is a wasteful number, since it uses less digits than its factorization.

243000000000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23055028520 (or 23055028518 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

Adding to 243000000000020 its reverse (20000000000342), we get a palindrome (263000000000362).

The spelling of 243000000000020 in words is "two hundred forty-three trillion, twenty", and thus it is an aban number.