203868745632 has 144 divisors (see below), whose sum is σ = 585998686728. Its totient is φ = 67225190400.

The previous prime is 203868745573. The next prime is 203868745643. The reversal of 203868745632 is 236547868302.

203868745632 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 6 + 8 + 74 + 563 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 116775292176 + 87093453456 = 341724^2 + 295116^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45171408 + ... + 45175920.

Almost surely, 2^203868745632 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 203868745632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292999343364).

203868745632 is an abundant number, since it is smaller than the sum of its proper divisors (382129941096).

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

203868745632 is a wasteful number, since it uses less digits than its factorization.

203868745632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6183 (or 6172 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 203868745632 in words is "two hundred three billion, eight hundred sixty-eight million, seven hundred forty-five thousand, six hundred thirty-two".