203632542064 has 80 divisors (see below), whose sum is σ = 453167013312. Its totient is φ = 86833004544.

The previous prime is 203632542011. The next prime is 203632542067. The reversal of 203632542064 is 460245236302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203632542067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59314492 + ... + 59317924.

Almost surely, 2^203632542064 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 203632542064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226583506656).

203632542064 is an abundant number, since it is smaller than the sum of its proper divisors (249534471248).

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

203632542064 is a wasteful number, since it uses less digits than its factorization.

203632542064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954 (or 5948 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 203632542064 its reverse (460245236302), we get a palindrome (663877778366).

The spelling of 203632542064 in words is "two hundred three billion, six hundred thirty-two million, five hundred forty-two thousand, sixty-four".