27807836863 has 2 divisors, whose sum is σ = 27807836864. Its totient is φ = 27807836862.

The previous prime is 27807836743. The next prime is 27807836867. The reversal of 27807836863 is 36863870872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27807836863 - 2²¹ = 27805739711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27807836798 and 27807836807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27807836867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13903918431 + 13903918432.

It is an arithmetic number, because the mean of its divisors is an integer number (13903918432).

Almost surely, 2^27807836863 is an apocalyptic number.

27807836863 is a deficient number, since it is larger than the sum of its proper divisors (1).

27807836863 is an equidigital number, since it uses as much as digits as its factorization.

27807836863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 27807836863 in words is "twenty-seven billion, eight hundred seven million, eight hundred thirty-six thousand, eight hundred sixty-three".