27766666772 has 48 divisors (see below), whose sum is σ = 54447377040. Its totient is φ = 12301836288.

The previous prime is 27766666751. The next prime is 27766666871.

27766666772 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 737991556 + 27028675216 = 27166^2 + 164404^2 .

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 207668 + ... + 314100.

It is an arithmetic number, because the mean of its divisors is an integer number (1134320355).

Almost surely, 2^27766666772 is an apocalyptic number.

It is an amenable number.

27766666772 is a deficient number, since it is larger than the sum of its proper divisors (26680710268).

27766666772 is a wasteful number, since it uses less digits than its factorization.

27766666772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106652 (or 106650 counting only the distinct ones).

The product of its digits is 74680704, while the sum is 62.

The spelling of 27766666772 in words is "twenty-seven billion, seven hundred sixty-six million, six hundred sixty-six thousand, seven hundred seventy-two".