243132330400 has 72 divisors (see below), whose sum is σ = 612693535104. Its totient is φ = 94115731200.

The previous prime is 243132330347. The next prime is 243132330461. The reversal of 243132330400 is 4033231342.

It is a super-2 number, since 2×243132330400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4877062 + ... + 4926661.

It is an arithmetic number, because the mean of its divisors is an integer number (8509632432).

Almost surely, 2^243132330400 is an apocalyptic number.

243132330400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243132330400 is an abundant number, since it is smaller than the sum of its proper divisors (369561204704).

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

243132330400 is a wasteful number, since it uses less digits than its factorization.

243132330400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9803774 (or 9803761 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 243132330400 its reverse (4033231342), we get a palindrome (247165561742).

The spelling of 243132330400 in words is "two hundred forty-three billion, one hundred thirty-two million, three hundred thirty thousand, four hundred".