27777673811 has 2 divisors, whose sum is σ = 27777673812. Its totient is φ = 27777673810.

The previous prime is 27777673793. The next prime is 27777673813. The reversal of 27777673811 is 11837677772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27777673811 - 2⁶ = 27777673747 is a prime.

Together with 27777673813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27777673813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888836905 + 13888836906.

It is an arithmetic number, because the mean of its divisors is an integer number (13888836906).

Almost surely, 2^27777673811 is an apocalyptic number.

27777673811 is a deficient number, since it is larger than the sum of its proper divisors (1).

27777673811 is an equidigital number, since it uses as much as digits as its factorization.

27777673811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4840416, while the sum is 56.

The spelling of 27777673811 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-three thousand, eight hundred eleven".