27776222244 has 135 divisors (see below), whose sum is σ = 74568862753. Its totient is φ = 9015747552.

The previous prime is 27776222209. The next prime is 27776222267. The reversal of 27776222244 is 44222267772.

The square root of 27776222244 is 166662.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 27215100900 + 561121344 = 164970^2 + 23688^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27776222244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 140995954 + ... + 140996150.

Almost surely, 2^27776222244 is an apocalyptic number.

27776222244 is the 166662-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27776222244

27776222244 is an abundant number, since it is smaller than the sum of its proper divisors (46792640509).

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

27776222244 is an equidigital number, since it uses as much as digits as its factorization.

27776222244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 249 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 45.

The spelling of 27776222244 in words is "twenty-seven billion, seven hundred seventy-six million, two hundred twenty-two thousand, two hundred forty-four".