243533441020 has 24 divisors (see below), whose sum is σ = 516385475424. Its totient is φ = 96467614656.

The previous prime is 243533440973. The next prime is 243533441023. The reversal of 243533441020 is 20144335342.

It is a happy number.

It is a super-3 number, since 3×243533441020³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243533441023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59107999 + ... + 59112118.

It is an arithmetic number, because the mean of its divisors is an integer number (21516061476).

Almost surely, 2^243533441020 is an apocalyptic number.

243533441020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243533441020 is an abundant number, since it is smaller than the sum of its proper divisors (272852034404).

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

243533441020 is a wasteful number, since it uses less digits than its factorization.

243533441020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118220229 (or 118220227 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 243533441020 its reverse (20144335342), we get a palindrome (263677776362).

The spelling of 243533441020 in words is "two hundred forty-three billion, five hundred thirty-three million, four hundred forty-one thousand, twenty".