27855081775 has 24 divisors (see below), whose sum is σ = 35667609984. Its totient is φ = 21557299200.

The previous prime is 27855081743. The next prime is 27855081809. The reversal of 27855081775 is 57718055872.

It is not a de Polignac number, because 27855081775 - 2⁵ = 27855081743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2965887 + ... + 2975263.

It is an arithmetic number, because the mean of its divisors is an integer number (1486150416).

Almost surely, 2^27855081775 is an apocalyptic number.

27855081775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27855081775 is a deficient number, since it is larger than the sum of its proper divisors (7812528209).

27855081775 is a wasteful number, since it uses less digits than its factorization.

27855081775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13251 (or 13246 counting only the distinct ones).

The product of its (nonzero) digits is 5488000, while the sum is 55.

The spelling of 27855081775 in words is "twenty-seven billion, eight hundred fifty-five million, eighty-one thousand, seven hundred seventy-five".