203440203042144 has 72 divisors (see below), whose sum is σ = 546738669455832. Its totient is φ = 66236345118720.

The previous prime is 203440203042127. The next prime is 203440203042149. The reversal of 203440203042144 is 441240302044302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203440203042149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572880577 + ... + 573235584.

It is an arithmetic number, because the mean of its divisors is an integer number (7593592631331).

Almost surely, 2^{203440203042144} is an apocalyptic number.

203440203042144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

203440203042144 is an abundant number, since it is smaller than the sum of its proper divisors (343298466413688).

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

203440203042144 is a wasteful number, since it uses less digits than its factorization.

203440203042144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146116260 (or 1146116209 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 203440203042144 its reverse (441240302044302), we get a palindrome (644680505086446).

The spelling of 203440203042144 in words is "two hundred three trillion, four hundred forty billion, two hundred three million, forty-two thousand, one hundred forty-four".