27844164077 has 2 divisors, whose sum is σ = 27844164078. Its totient is φ = 27844164076.

The previous prime is 27844164059. The next prime is 27844164109. The reversal of 27844164077 is 77046144872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23587123561 + 4257040516 = 153581^2 + 65246^2 .

It is a cyclic number.

It is not a de Polignac number, because 27844164077 - 2⁶ = 27844164013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27844160077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13922082038 + 13922082039.

It is an arithmetic number, because the mean of its divisors is an integer number (13922082039).

Almost surely, 2^27844164077 is an apocalyptic number.

It is an amenable number.

27844164077 is a deficient number, since it is larger than the sum of its proper divisors (1).

27844164077 is an equidigital number, since it uses as much as digits as its factorization.

27844164077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2107392, while the sum is 50.

The spelling of 27844164077 in words is "twenty-seven billion, eight hundred forty-four million, one hundred sixty-four thousand, seventy-seven".