27827855423 has 2 divisors, whose sum is σ = 27827855424. Its totient is φ = 27827855422.

The previous prime is 27827855381. The next prime is 27827855477. The reversal of 27827855423 is 32455872872.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27827855423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27827855483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13913927711 + 13913927712.

It is an arithmetic number, because the mean of its divisors is an integer number (13913927712).

Almost surely, 2^27827855423 is an apocalyptic number.

27827855423 is a deficient number, since it is larger than the sum of its proper divisors (1).

27827855423 is an equidigital number, since it uses as much as digits as its factorization.

27827855423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7526400, while the sum is 53.

The spelling of 27827855423 in words is "twenty-seven billion, eight hundred twenty-seven million, eight hundred fifty-five thousand, four hundred twenty-three".