27771418141 has 2 divisors, whose sum is σ = 27771418142. Its totient is φ = 27771418140.

The previous prime is 27771418111. The next prime is 27771418163. The reversal of 27771418141 is 14181417772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27765556900 + 5861241 = 166630^2 + 2421^2 .

It is a cyclic number.

It is not a de Polignac number, because 27771418141 - 2⁹ = 27771417629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27771418111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885709070 + 13885709071.

It is an arithmetic number, because the mean of its divisors is an integer number (13885709071).

Almost surely, 2^27771418141 is an apocalyptic number.

It is an amenable number.

27771418141 is a deficient number, since it is larger than the sum of its proper divisors (1).

27771418141 is an equidigital number, since it uses as much as digits as its factorization.

27771418141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87808, while the sum is 43.

The spelling of 27771418141 in words is "twenty-seven billion, seven hundred seventy-one million, four hundred eighteen thousand, one hundred forty-one".