27856276855 has 16 divisors (see below), whose sum is σ = 36698680224. Its totient is φ = 20130065280.

The previous prime is 27856276841. The next prime is 27856276873. The reversal of 27856276855 is 55867265872.

It is a de Polignac number, because none of the positive numbers 2^k-27856276855 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27856276793 and 27856276802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1604352 + ... + 1621621.

It is an arithmetic number, because the mean of its divisors is an integer number (2293667514).

Almost surely, 2^27856276855 is an apocalyptic number.

27856276855 is a deficient number, since it is larger than the sum of its proper divisors (8842403369).

27856276855 is a wasteful number, since it uses less digits than its factorization.

27856276855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226146.

The product of its digits is 56448000, while the sum is 61.

The spelling of 27856276855 in words is "twenty-seven billion, eight hundred fifty-six million, two hundred seventy-six thousand, eight hundred fifty-five".