13663600668 has 60 divisors (see below), whose sum is σ = 36324814680. Its totient is φ = 4477331808.

The previous prime is 13663600661. The next prime is 13663600669. The reversal of 13663600668 is 86600636631.

It is a happy number.

13663600668 is a `hidden beast` number, since 1 + 3 + 6 + 636 + 0 + 0 + 6 + 6 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13663600661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 338271 + ... + 376502.

It is an arithmetic number, because the mean of its divisors is an integer number (605413578).

Almost surely, 2^13663600668 is an apocalyptic number.

13663600668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13663600668 is an abundant number, since it is smaller than the sum of its proper divisors (22661214012).

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

13663600668 is a wasteful number, since it uses less digits than its factorization.

13663600668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714848 (or 714837 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 13663600668 in words is "thirteen billion, six hundred sixty-three million, six hundred thousand, six hundred sixty-eight".