27744481753 has 2 divisors, whose sum is σ = 27744481754. Its totient is φ = 27744481752.

The previous prime is 27744481741. The next prime is 27744481819. The reversal of 27744481753 is 35718444772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18634161049 + 9110320704 = 136507^2 + 95448^2 .

It is a cyclic number.

It is not a de Polignac number, because 27744481753 - 2⁹ = 27744481241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27744481753.

It is not a weakly prime, because it can be changed into another prime (27744481553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13872240876 + 13872240877.

It is an arithmetic number, because the mean of its divisors is an integer number (13872240877).

Almost surely, 2^27744481753 is an apocalyptic number.

It is an amenable number.

27744481753 is a deficient number, since it is larger than the sum of its proper divisors (1).

27744481753 is an equidigital number, since it uses as much as digits as its factorization.

27744481753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5268480, while the sum is 52.

The spelling of 27744481753 in words is "twenty-seven billion, seven hundred forty-four million, four hundred eighty-one thousand, seven hundred fifty-three".