27726678311 has 2 divisors, whose sum is σ = 27726678312. Its totient is φ = 27726678310.

The previous prime is 27726678307. The next prime is 27726678313. The reversal of 27726678311 is 11387662772.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27726678311 - 2² = 27726678307 is a prime.

Together with 27726678313, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27726678311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27726678313) by changing a digit.

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 as a sum of consecutive naturals, namely, 13863339155 + 13863339156.

It is an arithmetic number, because the mean of its divisors is an integer number (13863339156).

Almost surely, 2^27726678311 is an apocalyptic number.

27726678311 is a deficient number, since it is larger than the sum of its proper divisors (1).

27726678311 is an equidigital number, since it uses as much as digits as its factorization.

27726678311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 50.

The spelling of 27726678311 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred seventy-eight thousand, three hundred eleven".