27800053543 has 2 divisors, whose sum is σ = 27800053544. Its totient is φ = 27800053542.

The previous prime is 27800053529. The next prime is 27800053553. The reversal of 27800053543 is 34535000872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27800053543 - 2⁵ = 27800053511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27800053513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900026771 + 13900026772.

It is an arithmetic number, because the mean of its divisors is an integer number (13900026772).

Almost surely, 2^27800053543 is an apocalyptic number.

27800053543 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800053543 is an equidigital number, since it uses as much as digits as its factorization.

27800053543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 27800053543 in words is "twenty-seven billion, eight hundred million, fifty-three thousand, five hundred forty-three".