27773532691 has 2 divisors, whose sum is σ = 27773532692. Its totient is φ = 27773532690.

The previous prime is 27773532659. The next prime is 27773532749. The reversal of 27773532691 is 19623537772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27773532691 - 2⁵ = 27773532659 is a prime.

It is not a weakly prime, because it can be changed into another prime (27773532641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13886766345 + 13886766346.

It is an arithmetic number, because the mean of its divisors is an integer number (13886766346).

Almost surely, 2^27773532691 is an apocalyptic number.

27773532691 is a deficient number, since it is larger than the sum of its proper divisors (1).

27773532691 is an equidigital number, since it uses as much as digits as its factorization.

27773532691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3333960, while the sum is 52.

The spelling of 27773532691 in words is "twenty-seven billion, seven hundred seventy-three million, five hundred thirty-two thousand, six hundred ninety-one".