3668563806564 has 24 divisors (see below), whose sum is σ = 8639982052128. Its totient is φ = 1211426054080.

The previous prime is 3668563806563. The next prime is 3668563806629. The reversal of 3668563806564 is 4656083658663.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3668563806495 and 3668563806504.

It is not an unprimeable number, because it can be changed into a prime (3668563806563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428567177 + ... + 1428569744.

It is an arithmetic number, because the mean of its divisors is an integer number (359999252172).

Almost surely, 2^{3668563806564} is an apocalyptic number.

It is an amenable number.

3668563806564 is an abundant number, since it is smaller than the sum of its proper divisors (4971418245564).

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

3668563806564 is a wasteful number, since it uses less digits than its factorization.

3668563806564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857137035 (or 2857137033 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 66.

The spelling of 3668563806564 in words is "three trillion, six hundred sixty-eight billion, five hundred sixty-three million, eight hundred six thousand, five hundred sixty-four".