27775541653 has 2 divisors, whose sum is σ = 27775541654. Its totient is φ = 27775541652.

The previous prime is 27775541627. The next prime is 27775541669. The reversal of 27775541653 is 35614557772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16760409444 + 11015132209 = 129462^2 + 104953^2 .

It is a cyclic number.

It is not a de Polignac number, because 27775541653 - 2²⁹ = 27238670741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27775541653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27775541623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887770826 + 13887770827.

It is an arithmetic number, because the mean of its divisors is an integer number (13887770827).

Almost surely, 2^27775541653 is an apocalyptic number.

It is an amenable number.

27775541653 is a deficient number, since it is larger than the sum of its proper divisors (1).

27775541653 is an equidigital number, since it uses as much as digits as its factorization.

27775541653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6174000, while the sum is 52.

The spelling of 27775541653 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred forty-one thousand, six hundred fifty-three".