203840400404 has 12 divisors (see below), whose sum is σ = 365016531264. Its totient is φ = 99549962904.

The previous prime is 203840400377. The next prime is 203840400431. The reversal of 203840400404 is 404004048302.

It is an interprime number because it is at equal distance from previous prime (203840400377) and next prime (203840400431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592559132 + ... + 592559475.

It is an arithmetic number, because the mean of its divisors is an integer number (30418044272).

Almost surely, 2^203840400404 is an apocalyptic number.

It is an amenable number.

203840400404 is a deficient number, since it is larger than the sum of its proper divisors (161176130860).

203840400404 is a wasteful number, since it uses less digits than its factorization.

203840400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185118654 (or 1185118652 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 203840400404 its reverse (404004048302), we get a palindrome (607844448706).

The spelling of 203840400404 in words is "two hundred three billion, eight hundred forty million, four hundred thousand, four hundred four".