243305453120 has 56 divisors (see below), whose sum is σ = 580924668984. Its totient is φ = 97061216256.

The previous prime is 243305453113. The next prime is 243305453137. The reversal of 243305453120 is 21354503342.

It can be written as a sum of positive squares in 4 ways, for example, as 21705539584 + 221599913536 = 147328^2 + 470744^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899849 + ... + 1138568.

Almost surely, 2^243305453120 is an apocalyptic number.

243305453120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243305453120 is an abundant number, since it is smaller than the sum of its proper divisors (337619215864).

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

243305453120 is a wasteful number, since it uses less digits than its factorization.

243305453120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038807 (or 2038797 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 243305453120 its reverse (21354503342), we get a palindrome (264659956462).

The spelling of 243305453120 in words is "two hundred forty-three billion, three hundred five million, four hundred fifty-three thousand, one hundred twenty".