27775250252689 has 2 divisors, whose sum is σ = 27775250252690. Its totient is φ = 27775250252688.

The previous prime is 27775250252677. The next prime is 27775250252779. The reversal of 27775250252689 is 98625205257772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22752756900225 + 5022493352464 = 4769985^2 + 2241092^2 .

It is a cyclic number.

It is not a de Polignac number, because 27775250252689 - 2¹⁵ = 27775250219921 is a prime.

It is not a weakly prime, because it can be changed into another prime (27775250252089) 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, 13887625126344 + 13887625126345.

It is an arithmetic number, because the mean of its divisors is an integer number (13887625126345).

Almost surely, 2^{27775250252689} is an apocalyptic number.

It is an amenable number.

27775250252689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27775250252689 is an equidigital number, since it uses as much as digits as its factorization.

27775250252689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352000, while the sum is 67.

The spelling of 27775250252689 in words is "twenty-seven trillion, seven hundred seventy-five billion, two hundred fifty million, two hundred fifty-two thousand, six hundred eighty-nine".