203389317632 has 90 divisors (see below), whose sum is σ = 429304846113. Its totient is φ = 96250466304.

The previous prime is 203389317629. The next prime is 203389317647. The reversal of 203389317632 is 236713983302.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 160781752576 + 42607565056 = 400976^2 + 206416^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=318896.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 193888244 + ... + 193889292.

Almost surely, 2^203389317632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203389317632

203389317632 is an abundant number, since it is smaller than the sum of its proper divisors (225915528481).

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

203389317632 is an frugal number, since it uses more digits than its factorization.

203389317632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 203389317632 in words is "two hundred three billion, three hundred eighty-nine million, three hundred seventeen thousand, six hundred thirty-two".