27687686023 has 2 divisors, whose sum is σ = 27687686024. Its totient is φ = 27687686022.

The previous prime is 27687686011. The next prime is 27687686087. The reversal of 27687686023 is 32068678672.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27687686023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27687686423) 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 as a sum of consecutive naturals, namely, 13843843011 + 13843843012.

It is an arithmetic number, because the mean of its divisors is an integer number (13843843012).

Almost surely, 2^27687686023 is an apocalyptic number.

27687686023 is a deficient number, since it is larger than the sum of its proper divisors (1).

27687686023 is an equidigital number, since it uses as much as digits as its factorization.

27687686023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 55.

The spelling of 27687686023 in words is "twenty-seven billion, six hundred eighty-seven million, six hundred eighty-six thousand, twenty-three".