203404004044 has 6 divisors (see below), whose sum is σ = 355957007084. Its totient is φ = 101702002020.

The previous prime is 203404004003. The next prime is 203404004047. The reversal of 203404004044 is 440400404302.

It is a super-2 number, since 2×203404004044² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203404004047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25425500502 + ... + 25425500509.

Almost surely, 2^203404004044 is an apocalyptic number.

It is an amenable number.

203404004044 is a deficient number, since it is larger than the sum of its proper divisors (152553003040).

203404004044 is a wasteful number, since it uses less digits than its factorization.

203404004044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50851001015 (or 50851001013 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 203404004044 its reverse (440400404302), we get a palindrome (643804408346).

The spelling of 203404004044 in words is "two hundred three billion, four hundred four million, four thousand, forty-four".