27774764226 has 144 divisors (see below), whose sum is σ = 67323110400. Its totient is φ = 8268099840.

The previous prime is 27774764221. The next prime is 27774764261. The reversal of 27774764226 is 62246747772.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27774764221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 57984655 + ... + 57985133.

It is an arithmetic number, because the mean of its divisors is an integer number (467521600).

Almost surely, 2^27774764226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27774764226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33661555200).

27774764226 is an abundant number, since it is smaller than the sum of its proper divisors (39548346174).

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

27774764226 is a wasteful number, since it uses less digits than its factorization.

27774764226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 911 counting only the distinct ones).

The product of its digits is 11063808, while the sum is 54.

The spelling of 27774764226 in words is "twenty-seven billion, seven hundred seventy-four million, seven hundred sixty-four thousand, two hundred twenty-six".