27143991241 has 2 divisors, whose sum is σ = 27143991242. Its totient is φ = 27143991240.

The previous prime is 27143991209. The next prime is 27143991257. The reversal of 27143991241 is 14219934172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23175495225 + 3968496016 = 152235^2 + 62996^2 .

It is a cyclic number.

It is not a de Polignac number, because 27143991241 - 2⁵ = 27143991209 is a prime.

It is not a weakly prime, because it can be changed into another prime (27143991041) 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, 13571995620 + 13571995621.

It is an arithmetic number, because the mean of its divisors is an integer number (13571995621).

Almost surely, 2^27143991241 is an apocalyptic number.

It is an amenable number.

27143991241 is a deficient number, since it is larger than the sum of its proper divisors (1).

27143991241 is an equidigital number, since it uses as much as digits as its factorization.

27143991241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The spelling of 27143991241 in words is "twenty-seven billion, one hundred forty-three million, nine hundred ninety-one thousand, two hundred forty-one".