203453005012 has 6 divisors (see below), whose sum is σ = 356042758778. Its totient is φ = 101726502504.

The previous prime is 203453004913. The next prime is 203453005037. The reversal of 203453005012 is 210500354302.

It can be written as a sum of positive squares in only one way, i.e., 192884342596 + 10568662416 = 439186^2 + 102804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25431625623 + ... + 25431625630.

Almost surely, 2^203453005012 is an apocalyptic number.

It is an amenable number.

203453005012 is a deficient number, since it is larger than the sum of its proper divisors (152589753766).

203453005012 is a wasteful number, since it uses less digits than its factorization.

203453005012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50863251257 (or 50863251255 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 203453005012 its reverse (210500354302), we get a palindrome (413953359314).

The spelling of 203453005012 in words is "two hundred three billion, four hundred fifty-three million, five thousand, twelve".