203453405004 has 12 divisors (see below), whose sum is σ = 474724611704. Its totient is φ = 67817801664.

The previous prime is 203453404961. The next prime is 203453405009. The reversal of 203453405004 is 400504354302.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (203453405009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8477225197 + ... + 8477225220.

Almost surely, 2^203453405004 is an apocalyptic number.

It is an amenable number.

203453405004 is an abundant number, since it is smaller than the sum of its proper divisors (271271206700).

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

203453405004 is a wasteful number, since it uses less digits than its factorization.

203453405004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16954450424 (or 16954450422 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 203453405004 its reverse (400504354302), we get a palindrome (603957759306).

The spelling of 203453405004 in words is "two hundred three billion, four hundred fifty-three million, four hundred five thousand, four".