27966724859 has 2 divisors, whose sum is σ = 27966724860. Its totient is φ = 27966724858.

The previous prime is 27966724831. The next prime is 27966724861. The reversal of 27966724859 is 95842766972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27966724859 - 2⁸ = 27966724603 is a prime.

Together with 27966724861, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27966724795 and 27966724804.

It is not a weakly prime, because it can be changed into another prime (27966724829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13983362429 + 13983362430.

It is an arithmetic number, because the mean of its divisors is an integer number (13983362430).

Almost surely, 2^27966724859 is an apocalyptic number.

27966724859 is a deficient number, since it is larger than the sum of its proper divisors (1).

27966724859 is an equidigital number, since it uses as much as digits as its factorization.

27966724859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 65.

The spelling of 27966724859 in words is "twenty-seven billion, nine hundred sixty-six million, seven hundred twenty-four thousand, eight hundred fifty-nine".