663840327103 has 16 divisors (see below), whose sum is σ = 678902881536. Its totient is φ = 648951376320.

The previous prime is 663840327079. The next prime is 663840327109. The reversal of 663840327103 is 301723048366.

It is a cyclic number.

It is not a de Polignac number, because 663840327103 - 2⁵ = 663840327071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 663840327103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663840327109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7828176 + ... + 7912522.

It is an arithmetic number, because the mean of its divisors is an integer number (42431430096).

Almost surely, 2^663840327103 is an apocalyptic number.

663840327103 is a deficient number, since it is larger than the sum of its proper divisors (15062554433).

663840327103 is a wasteful number, since it uses less digits than its factorization.

663840327103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85374.

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 663840327103 in words is "six hundred sixty-three billion, eight hundred forty million, three hundred twenty-seven thousand, one hundred three".