27743281901 has 2 divisors, whose sum is σ = 27743281902. Its totient is φ = 27743281900.

The previous prime is 27743281877. The next prime is 27743281921. The reversal of 27743281901 is 10918234772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27491298025 + 251983876 = 165805^2 + 15874^2 .

It is a cyclic number.

It is not a de Polignac number, because 27743281901 - 2⁶ = 27743281837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27743281921) 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, 13871640950 + 13871640951.

It is an arithmetic number, because the mean of its divisors is an integer number (13871640951).

Almost surely, 2^27743281901 is an apocalyptic number.

It is an amenable number.

27743281901 is a deficient number, since it is larger than the sum of its proper divisors (1).

27743281901 is an equidigital number, since it uses as much as digits as its factorization.

27743281901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 27743281901 in words is "twenty-seven billion, seven hundred forty-three million, two hundred eighty-one thousand, nine hundred one".