27687686087 has 2 divisors, whose sum is σ = 27687686088. Its totient is φ = 27687686086.

The previous prime is 27687686023. The next prime is 27687686209. The reversal of 27687686087 is 78068678672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27687686087 - 2⁶ = 27687686023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27687686387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13843843043 + 13843843044.

It is an arithmetic number, because the mean of its divisors is an integer number (13843843044).

Almost surely, 2^27687686087 is an apocalyptic number.

27687686087 is a deficient number, since it is larger than the sum of its proper divisors (1).

27687686087 is an equidigital number, since it uses as much as digits as its factorization.

27687686087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75866112, while the sum is 65.

The spelling of 27687686087 in words is "twenty-seven billion, six hundred eighty-seven million, six hundred eighty-six thousand, eighty-seven".