27215367859 has 2 divisors, whose sum is σ = 27215367860. Its totient is φ = 27215367858.

The previous prime is 27215367857. The next prime is 27215367887. The reversal of 27215367859 is 95876351272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27215367859 - 2¹ = 27215367857 is a prime.

Together with 27215367857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27215367853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13607683929 + 13607683930.

It is an arithmetic number, because the mean of its divisors is an integer number (13607683930).

Almost surely, 2^27215367859 is an apocalyptic number.

27215367859 is a deficient number, since it is larger than the sum of its proper divisors (1).

27215367859 is an equidigital number, since it uses as much as digits as its factorization.

27215367859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 55.

The spelling of 27215367859 in words is "twenty-seven billion, two hundred fifteen million, three hundred sixty-seven thousand, eight hundred fifty-nine".