3663666663663 has 16 divisors (see below), whose sum is σ = 4933756419552. Its totient is φ = 2418015600000.

The previous prime is 3663666663647. The next prime is 3663666663721.

3663666663663 is nontrivially palindromic in base 10.

3663666663663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3663666663663 - 2⁴ = 3663666663647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3663666663594 and 3663666663603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663666663463) 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, 2389393 + ... + 3610613.

It is an arithmetic number, because the mean of its divisors is an integer number (308359776222).

Almost surely, 2^{3663666663663} is an apocalyptic number.

3663666663663 is a deficient number, since it is larger than the sum of its proper divisors (1270089755889).

3663666663663 is a wasteful number, since it uses less digits than its factorization.

3663666663663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231226.

The product of its digits is 816293376, while the sum is 66.

The spelling of 3663666663663 in words is "three trillion, six hundred sixty-three billion, six hundred sixty-six million, six hundred sixty-three thousand, six hundred sixty-three".