27780055050067 has 2 divisors, whose sum is σ = 27780055050068. Its totient is φ = 27780055050066.

The previous prime is 27780055050037. The next prime is 27780055050079. The reversal of 27780055050067 is 76005055008772.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27780055050067 - 2¹¹ = 27780055048019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27780055049996 and 27780055050023.

It is not a weakly prime, because it can be changed into another prime (27780055050037) 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, 13890027525033 + 13890027525034.

It is an arithmetic number, because the mean of its divisors is an integer number (13890027525034).

Almost surely, 2^{27780055050067} is an apocalyptic number.

27780055050067 is a deficient number, since it is larger than the sum of its proper divisors (1).

27780055050067 is an equidigital number, since it uses as much as digits as its factorization.

27780055050067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4116000, while the sum is 52.

The spelling of 27780055050067 in words is "twenty-seven trillion, seven hundred eighty billion, fifty-five million, fifty thousand, sixty-seven".