13663601066 has 8 divisors (see below), whose sum is σ = 20526410244. Its totient is φ = 6821464320.

The previous prime is 13663600997. The next prime is 13663601087. The reversal of 13663601066 is 66010636631.

13663601066 is digitally balanced in base 5, 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 11284600441 + 2379000625 = 106229^2 + 48775^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5166455 + ... + 5169098.

Almost surely, 2^13663601066 is an apocalyptic number.

13663601066 is a deficient number, since it is larger than the sum of its proper divisors (6862809178).

13663601066 is a wasteful number, since it uses less digits than its factorization.

13663601066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10336216.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 13663601066 in words is "thirteen billion, six hundred sixty-three million, six hundred one thousand, sixty-six".