27808941580 has 144 divisors (see below), whose sum is σ = 70646748480. Its totient is φ = 9157145088.

The previous prime is 27808941577. The next prime is 27808941593. The reversal of 27808941580 is 8514980872.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5596257 + ... + 5601223.

It is an arithmetic number, because the mean of its divisors is an integer number (490602420).

Almost surely, 2^27808941580 is an apocalyptic number.

27808941580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27808941580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35323374240).

27808941580 is an abundant number, since it is smaller than the sum of its proper divisors (42837806900).

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

27808941580 is a wasteful number, since it uses less digits than its factorization.

27808941580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216 (or 5207 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 27808941580 in words is "twenty-seven billion, eight hundred eight million, nine hundred forty-one thousand, five hundred eighty".