27827662687 has 16 divisors (see below), whose sum is σ = 30572704800. Its totient is φ = 25119015040.

The previous prime is 27827662669. The next prime is 27827662693. The reversal of 27827662687 is 78626672872.

It is a cyclic number.

It is not a de Polignac number, because 27827662687 - 2²⁷ = 27693444959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27827662697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090389 + ... + 1115617.

It is an arithmetic number, because the mean of its divisors is an integer number (1910794050).

Almost surely, 2^27827662687 is an apocalyptic number.

27827662687 is a deficient number, since it is larger than the sum of its proper divisors (2745042113).

27827662687 is a wasteful number, since it uses less digits than its factorization.

27827662687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25946.

The product of its digits is 37933056, while the sum is 61.

The spelling of 27827662687 in words is "twenty-seven billion, eight hundred twenty-seven million, six hundred sixty-two thousand, six hundred eighty-seven".