27366564556 has 12 divisors (see below), whose sum is σ = 47896441992. Its totient is φ = 13681866848.

The previous prime is 27366564553. The next prime is 27366564569. The reversal of 27366564556 is 65546566372.

It is a junction number, because it is equal to n+sod(n) for n = 27366564497 and 27366564506.

It is not an unprimeable number, because it can be changed into a prime (27366564553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309745 + ... + 388168.

It is an arithmetic number, because the mean of its divisors is an integer number (3991370166).

Almost surely, 2^27366564556 is an apocalyptic number.

It is an amenable number.

27366564556 is a deficient number, since it is larger than the sum of its proper divisors (20529877436).

27366564556 is a wasteful number, since it uses less digits than its factorization.

27366564556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707720 (or 707718 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 55.

The spelling of 27366564556 in words is "twenty-seven billion, three hundred sixty-six million, five hundred sixty-four thousand, five hundred fifty-six".