243033013020 has 96 divisors (see below), whose sum is σ = 811518962688. Its totient is φ = 53135165952.

The previous prime is 243033013019. The next prime is 243033013031. The reversal of 243033013020 is 20310330342.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12569689 + ... + 12589008.

It is an arithmetic number, because the mean of its divisors is an integer number (8453322528).

Almost surely, 2^243033013020 is an apocalyptic number.

243033013020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243033013020 is an abundant number, since it is smaller than the sum of its proper divisors (568485949668).

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

243033013020 is a wasteful number, since it uses less digits than its factorization.

243033013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25158739 (or 25158737 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 243033013020 its reverse (20310330342), we get a palindrome (263343343362).

The spelling of 243033013020 in words is "two hundred forty-three billion, thirty-three million, thirteen thousand, twenty".