27803900563 has 2 divisors, whose sum is σ = 27803900564. Its totient is φ = 27803900562.

The previous prime is 27803900557. The next prime is 27803900581. The reversal of 27803900563 is 36500930872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27803900563 - 2¹³ = 27803892371 is a prime.

It is not a weakly prime, because it can be changed into another prime (27803900533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13901950281 + 13901950282.

It is an arithmetic number, because the mean of its divisors is an integer number (13901950282).

Almost surely, 2^27803900563 is an apocalyptic number.

27803900563 is a deficient number, since it is larger than the sum of its proper divisors (1).

27803900563 is an equidigital number, since it uses as much as digits as its factorization.

27803900563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 27803900563 in words is "twenty-seven billion, eight hundred three million, nine hundred thousand, five hundred sixty-three".