27768713611 has 4 divisors (see below), whose sum is σ = 27769051792. Its totient is φ = 27768375432.

The previous prime is 27768713587. The next prime is 27768713633. The reversal of 27768713611 is 11631786772.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27768713611 - 2¹⁷ = 27768582539 is a prime.

It is a super-2 number, since 2×27768713611² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27768713641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41521 + ... + 239293.

It is an arithmetic number, because the mean of its divisors is an integer number (6942262948).

Almost surely, 2^27768713611 is an apocalyptic number.

27768713611 is a deficient number, since it is larger than the sum of its proper divisors (338181).

27768713611 is a wasteful number, since it uses less digits than its factorization.

27768713611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338180.

The product of its digits is 592704, while the sum is 49.

The spelling of 27768713611 in words is "twenty-seven billion, seven hundred sixty-eight million, seven hundred thirteen thousand, six hundred eleven".