27975772344769 has 2 divisors, whose sum is σ = 27975772344770. Its totient is φ = 27975772344768.

The previous prime is 27975772344719. The next prime is 27975772344799. The reversal of 27975772344769 is 96744327757972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19299283679025 + 8676488665744 = 4393095^2 + 2945588^2 .

It is a cyclic number.

It is not a de Polignac number, because 27975772344769 - 2³¹ = 27973624861121 is a prime.

It is a super-2 number, since 2×27975772344769² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27975772344719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13987886172384 + 13987886172385.

It is an arithmetic number, because the mean of its divisors is an integer number (13987886172385).

Almost surely, 2^{27975772344769} is an apocalyptic number.

It is an amenable number.

27975772344769 is a deficient number, since it is larger than the sum of its proper divisors (1).

27975772344769 is an equidigital number, since it uses as much as digits as its factorization.

27975772344769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7841473920, while the sum is 79.

The spelling of 27975772344769 in words is "twenty-seven trillion, nine hundred seventy-five billion, seven hundred seventy-two million, three hundred forty-four thousand, seven hundred sixty-nine".