27755136077 has 2 divisors, whose sum is σ = 27755136078. Its totient is φ = 27755136076.

The previous prime is 27755135999. The next prime is 27755136107. The reversal of 27755136077 is 77063155772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16198671076 + 11556465001 = 127274^2 + 107501^2 .

It is a cyclic number.

It is not a de Polignac number, because 27755136077 - 2¹⁰ = 27755135053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27755136677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13877568038 + 13877568039.

It is an arithmetic number, because the mean of its divisors is an integer number (13877568039).

Almost surely, 2^27755136077 is an apocalyptic number.

It is an amenable number.

27755136077 is a deficient number, since it is larger than the sum of its proper divisors (1).

27755136077 is an equidigital number, since it uses as much as digits as its factorization.

27755136077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160900, while the sum is 50.

The spelling of 27755136077 in words is "twenty-seven billion, seven hundred fifty-five million, one hundred thirty-six thousand, seventy-seven".