27777775000 has 96 divisors (see below), whose sum is σ = 65386440000. Its totient is φ = 11062240000.

The previous prime is 27777774977. The next prime is 27777775001. The reversal of 27777775000 is 57777772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27777775001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5972676 + ... + 5977324.

It is an arithmetic number, because the mean of its divisors is an integer number (681108750).

Almost surely, 2^27777775000 is an apocalyptic number.

27777775000 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 27777775000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32693220000).

27777775000 is an abundant number, since it is smaller than the sum of its proper divisors (37608665000).

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

27777775000 is an equidigital number, since it uses as much as digits as its factorization.

27777775000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919 (or 4895 counting only the distinct ones).

The product of its (nonzero) digits is 1176490, while the sum is 49.

It can be divided in two parts, 2777 and 7775000, that added together give a palindrome (7777777).

The spelling of 27777775000 in words is "twenty-seven billion, seven hundred seventy-seven million, seven hundred seventy-five thousand".