27773316840 has 128 divisors (see below), whose sum is σ = 88282949760. Its totient is φ = 6965673984.

The previous prime is 27773316833. The next prime is 27773316841. The reversal of 27773316840 is 4861337772.

It is a self number, because there is not a number n which added to its sum of digits gives 27773316840.

It is not an unprimeable number, because it can be changed into a prime (27773316841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3559984 + ... + 3567776.

It is an arithmetic number, because the mean of its divisors is an integer number (689710545).

Almost surely, 2^27773316840 is an apocalyptic number.

27773316840 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 27773316840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44141474880).

27773316840 is an abundant number, since it is smaller than the sum of its proper divisors (60509632920).

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

27773316840 is a wasteful number, since it uses less digits than its factorization.

27773316840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9571 (or 9567 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 27773316840 in words is "twenty-seven billion, seven hundred seventy-three million, three hundred sixteen thousand, eight hundred forty".