27806804586 has 96 divisors (see below), whose sum is σ = 68141062080. Its totient is φ = 8121542400.

The previous prime is 27806804581. The next prime is 27806804611. The reversal of 27806804586 is 68540860872.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27806804581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 653160 + ... + 694428.

It is an arithmetic number, because the mean of its divisors is an integer number (709802730).

Almost surely, 2^27806804586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27806804586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34070531040).

27806804586 is an abundant number, since it is smaller than the sum of its proper divisors (40334257494).

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

27806804586 is a wasteful number, since it uses less digits than its factorization.

27806804586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41412 (or 41409 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 27806804586 in words is "twenty-seven billion, eight hundred six million, eight hundred four thousand, five hundred eighty-six".