27551085811 has 4 divisors (see below), whose sum is σ = 27726570592. Its totient is φ = 27375601032.

The previous prime is 27551085803. The next prime is 27551085827. The reversal of 27551085811 is 11858015572.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27551085811 - 2³ = 27551085803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27551085011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87742155 + ... + 87742468.

It is an arithmetic number, because the mean of its divisors is an integer number (6931642648).

Almost surely, 2^27551085811 is an apocalyptic number.

27551085811 is a deficient number, since it is larger than the sum of its proper divisors (175484781).

27551085811 is a wasteful number, since it uses less digits than its factorization.

27551085811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175484780.

The product of its (nonzero) digits is 112000, while the sum is 43.

The spelling of 27551085811 in words is "twenty-seven billion, five hundred fifty-one million, eighty-five thousand, eight hundred eleven".