27777752502769 has 2 divisors, whose sum is σ = 27777752502770. Its totient is φ = 27777752502768.

The previous prime is 27777752502749. The next prime is 27777752502781. The reversal of 27777752502769 is 96720525777772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26750742540544 + 1027009962225 = 5172112^2 + 1013415^2 .

It is a cyclic number.

It is not a de Polignac number, because 27777752502769 - 2¹⁵ = 27777752470001 is a prime.

It is a super-2 number, since 2×27777752502769² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27777752502749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888876251384 + 13888876251385.

It is an arithmetic number, because the mean of its divisors is an integer number (13888876251385).

Almost surely, 2^{27777752502769} is an apocalyptic number.

It is an amenable number.

27777752502769 is a deficient number, since it is larger than the sum of its proper divisors (1).

27777752502769 is an equidigital number, since it uses as much as digits as its factorization.

27777752502769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270609200, while the sum is 73.

The spelling of 27777752502769 in words is "twenty-seven trillion, seven hundred seventy-seven billion, seven hundred fifty-two million, five hundred two thousand, seven hundred sixty-nine".