27775505503 has 2 divisors, whose sum is σ = 27775505504. Its totient is φ = 27775505502.

The previous prime is 27775505501. The next prime is 27775505551. The reversal of 27775505503 is 30550557772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27775505503 - 2¹ = 27775505501 is a prime.

Together with 27775505501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27775505501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887752751 + 13887752752.

It is an arithmetic number, because the mean of its divisors is an integer number (13887752752).

Almost surely, 2^27775505503 is an apocalyptic number.

27775505503 is a deficient number, since it is larger than the sum of its proper divisors (1).

27775505503 is an equidigital number, since it uses as much as digits as its factorization.

27775505503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1286250, while the sum is 46.

The spelling of 27775505503 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred five thousand, five hundred three".