663995667113 has 12 divisors (see below), whose sum is σ = 694245811140. Its totient is φ = 635011387296.

The previous prime is 663995667103. The next prime is 663995667121. The reversal of 663995667113 is 311766599366.

663995667113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 187387691689 + 476607975424 = 432883^2 + 690368^2 .

It is not a de Polignac number, because 663995667113 - 2³² = 659700699817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663995667103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2888195 + ... + 3109607.

It is an arithmetic number, because the mean of its divisors is an integer number (57853817595).

Almost surely, 2^663995667113 is an apocalyptic number.

It is an amenable number.

663995667113 is a deficient number, since it is larger than the sum of its proper divisors (30250144027).

663995667113 is a wasteful number, since it uses less digits than its factorization.

663995667113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227128 (or 227105 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 62.

The spelling of 663995667113 in words is "six hundred sixty-three billion, nine hundred ninety-five million, six hundred sixty-seven thousand, one hundred thirteen".