663320504505 has 48 divisors (see below), whose sum is σ = 1146962344320. Its totient is φ = 326720841216.

The previous prime is 663320504503. The next prime is 663320504527. The reversal of 663320504505 is 505405023366.

It is not a de Polignac number, because 663320504505 - 2¹ = 663320504503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663320504503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 852940 + ... + 1433229.

It is an arithmetic number, because the mean of its divisors is an integer number (23895048840).

Almost surely, 2^663320504505 is an apocalyptic number.

It is an amenable number.

663320504505 is a deficient number, since it is larger than the sum of its proper divisors (483641839815).

663320504505 is a wasteful number, since it uses less digits than its factorization.

663320504505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286258 (or 2286229 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 39.

The spelling of 663320504505 in words is "six hundred sixty-three billion, three hundred twenty million, five hundred four thousand, five hundred five".