243491704420 has 24 divisors (see below), whose sum is σ = 511346102400. Its totient is φ = 97394105952.

The previous prime is 243491704409. The next prime is 243491704439. The reversal of 243491704420 is 24407194342.

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, 736071 + ... + 1014289.

It is an arithmetic number, because the mean of its divisors is an integer number (21306087600).

Almost surely, 2^243491704420 is an apocalyptic number.

243491704420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243491704420 is an abundant number, since it is smaller than the sum of its proper divisors (267854397980).

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

243491704420 is a wasteful number, since it uses less digits than its factorization.

243491704420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321987 (or 321985 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

Adding to 243491704420 its reverse (24407194342), we get a palindrome (267898898762).

The spelling of 243491704420 in words is "two hundred forty-three billion, four hundred ninety-one million, seven hundred four thousand, four hundred twenty".