27942333179861 has 2 divisors, whose sum is σ = 27942333179862. Its totient is φ = 27942333179860.

The previous prime is 27942333179791. The next prime is 27942333179909. The reversal of 27942333179861 is 16897133324972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23169445306225 + 4772887873636 = 4813465^2 + 2184694^2 .

It is a cyclic number.

It is not a de Polignac number, because 27942333179861 - 2¹⁴ = 27942333163477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27942333179561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13971166589930 + 13971166589931.

It is an arithmetic number, because the mean of its divisors is an integer number (13971166589931).

Almost surely, 2^{27942333179861} is an apocalyptic number.

It is an amenable number.

27942333179861 is a deficient number, since it is larger than the sum of its proper divisors (1).

27942333179861 is an equidigital number, since it uses as much as digits as its factorization.

27942333179861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 65.

The spelling of 27942333179861 in words is "twenty-seven trillion, nine hundred forty-two billion, three hundred thirty-three million, one hundred seventy-nine thousand, eight hundred sixty-one".