27341643689 has 2 divisors, whose sum is σ = 27341643690. Its totient is φ = 27341643688.

The previous prime is 27341643661. The next prime is 27341643713. The reversal of 27341643689 is 98634614372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17719603225 + 9622040464 = 133115^2 + 98092^2 .

It is a cyclic number.

It is not a de Polignac number, because 27341643689 - 2¹⁶ = 27341578153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27341643689.

It is not a weakly prime, because it can be changed into another prime (27341643649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13670821844 + 13670821845.

It is an arithmetic number, because the mean of its divisors is an integer number (13670821845).

Almost surely, 2^27341643689 is an apocalyptic number.

It is an amenable number.

27341643689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27341643689 is an equidigital number, since it uses as much as digits as its factorization.

27341643689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 53.

The spelling of 27341643689 in words is "twenty-seven billion, three hundred forty-one million, six hundred forty-three thousand, six hundred eighty-nine".