27838862687 has 2 divisors, whose sum is σ = 27838862688. Its totient is φ = 27838862686.

The previous prime is 27838862663. The next prime is 27838862713. The reversal of 27838862687 is 78626883872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27838862687 - 2³⁴ = 10658993503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27838862657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13919431343 + 13919431344.

It is an arithmetic number, because the mean of its divisors is an integer number (13919431344).

Almost surely, 2^27838862687 is an apocalyptic number.

27838862687 is a deficient number, since it is larger than the sum of its proper divisors (1).

27838862687 is an equidigital number, since it uses as much as digits as its factorization.

27838862687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86704128, while the sum is 65.

The spelling of 27838862687 in words is "twenty-seven billion, eight hundred thirty-eight million, eight hundred sixty-two thousand, six hundred eighty-seven".