27755277750077 has 2 divisors, whose sum is σ = 27755277750078. Its totient is φ = 27755277750076.

The previous prime is 27755277750007. The next prime is 27755277750149. The reversal of 27755277750077 is 77005777255772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18683651806681 + 9071625943396 = 4322459^2 + 3011914^2 .

It is a cyclic number.

It is not a de Polignac number, because 27755277750077 - 2¹⁰ = 27755277749053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27755277749989 and 27755277750016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27755277750007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13877638875038 + 13877638875039.

It is an arithmetic number, because the mean of its divisors is an integer number (13877638875039).

Almost surely, 2^{27755277750077} is an apocalyptic number.

It is an amenable number.

27755277750077 is a deficient number, since it is larger than the sum of its proper divisors (1).

27755277750077 is an equidigital number, since it uses as much as digits as its factorization.

27755277750077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411771500, while the sum is 68.

The spelling of 27755277750077 in words is "twenty-seven trillion, seven hundred fifty-five billion, two hundred seventy-seven million, seven hundred fifty thousand, seventy-seven".