27666862848 has 180 divisors, whose sum is σ = 83108283720. Its totient is φ = 9154031616.

The previous prime is 27666862843. The next prime is 27666862849. The reversal of 27666862848 is 84826866672.

It is a happy number.

It is a super-2 number, since 2×27666862848² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27666862841) 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, 2835963 + ... + 2845701.

Almost surely, 2^27666862848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27666862848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41554141860).

27666862848 is an abundant number, since it is smaller than the sum of its proper divisors (55441420872).

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

27666862848 is an equidigital number, since it uses as much as digits as its factorization.

27666862848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904 (or 9881 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 63.

The spelling of 27666862848 in words is "twenty-seven billion, six hundred sixty-six million, eight hundred sixty-two thousand, eight hundred forty-eight".