27803027805 has 16 divisors (see below), whose sum is σ = 50839822464. Its totient is φ = 12709955520.

The previous prime is 27803027797. The next prime is 27803027809. The reversal of 27803027805 is 50872030872.

It is not a de Polignac number, because 27803027805 - 2³ = 27803027797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27803027809) 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 in 15 ways as a sum of consecutive naturals, for example, 132395266 + ... + 132395475.

It is an arithmetic number, because the mean of its divisors is an integer number (3177488904).

Almost surely, 2^27803027805 is an apocalyptic number.

It is an amenable number.

27803027805 is a deficient number, since it is larger than the sum of its proper divisors (23036794659).

27803027805 is a wasteful number, since it uses less digits than its factorization.

27803027805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264790756.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 27803027805 in words is "twenty-seven billion, eight hundred three million, twenty-seven thousand, eight hundred five".