243404012404 has 48 divisors (see below), whose sum is σ = 519786989568. Its totient is φ = 97460038368.

The previous prime is 243404012333. The next prime is 243404012477. The reversal of 243404012404 is 404210404342.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4367152 + ... + 4422535.

It is an arithmetic number, because the mean of its divisors is an integer number (10828895616).

Almost surely, 2^243404012404 is an apocalyptic number.

It is an amenable number.

243404012404 is an abundant number, since it is smaller than the sum of its proper divisors (276382977164).

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

243404012404 is a wasteful number, since it uses less digits than its factorization.

243404012404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8789764 (or 8789762 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 243404012404 its reverse (404210404342), we get a palindrome (647614416746).

The spelling of 243404012404 in words is "two hundred forty-three billion, four hundred four million, twelve thousand, four hundred four".