27122741488649 has 2 divisors, whose sum is σ = 27122741488650. Its totient is φ = 27122741488648.

The previous prime is 27122741488477. The next prime is 27122741488673. The reversal of 27122741488649 is 94688414722172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25471855711225 + 1650885777424 = 5046965^2 + 1284868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27122741488649 is a prime.

It is not a weakly prime, because it can be changed into another prime (27122741488699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13561370744324 + 13561370744325.

It is an arithmetic number, because the mean of its divisors is an integer number (13561370744325).

Almost surely, 2^{27122741488649} is an apocalyptic number.

It is an amenable number.

27122741488649 is a deficient number, since it is larger than the sum of its proper divisors (1).

27122741488649 is an equidigital number, since it uses as much as digits as its factorization.

27122741488649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86704128, while the sum is 65.

The spelling of 27122741488649 in words is "twenty-seven trillion, one hundred twenty-two billion, seven hundred forty-one million, four hundred eighty-eight thousand, six hundred forty-nine".