640203103303 has 8 divisors (see below), whose sum is σ = 644902909920. Its totient is φ = 635520481440.

The previous prime is 640203103289. The next prime is 640203103313. The reversal of 640203103303 is 303301302046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 640203103303 - 2¹³ = 640203095111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640203103313) 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 7 ways as a sum of consecutive naturals, for example, 4221403 + ... + 4370428.

It is an arithmetic number, because the mean of its divisors is an integer number (80612863740).

Almost surely, 2^640203103303 is an apocalyptic number.

640203103303 is a deficient number, since it is larger than the sum of its proper divisors (4699806617).

640203103303 is a wasteful number, since it uses less digits than its factorization.

640203103303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8592377.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 640203103303 its reverse (303301302046), we get a palindrome (943504405349).

The spelling of 640203103303 in words is "six hundred forty billion, two hundred three million, one hundred three thousand, three hundred three".