27788662441 has 2 divisors, whose sum is σ = 27788662442. Its totient is φ = 27788662440.

The previous prime is 27788662403. The next prime is 27788662463. The reversal of 27788662441 is 14426688772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14814541225 + 12974121216 = 121715^2 + 113904^2 .

It is a cyclic number.

It is not a de Polignac number, because 27788662441 - 2²⁹ = 27251791529 is a prime.

It is not a weakly prime, because it can be changed into another prime (27788612441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13894331220 + 13894331221.

It is an arithmetic number, because the mean of its divisors is an integer number (13894331221).

Almost surely, 2^27788662441 is an apocalyptic number.

It is an amenable number.

27788662441 is a deficient number, since it is larger than the sum of its proper divisors (1).

27788662441 is an equidigital number, since it uses as much as digits as its factorization.

27788662441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7225344, while the sum is 55.

The spelling of 27788662441 in words is "twenty-seven billion, seven hundred eighty-eight million, six hundred sixty-two thousand, four hundred forty-one".