27694981459 has 2 divisors, whose sum is σ = 27694981460. Its totient is φ = 27694981458.

The previous prime is 27694981399. The next prime is 27694981471. The reversal of 27694981459 is 95418949672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27694981459 - 2⁷ = 27694981331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27694981459.

It is not a weakly prime, because it can be changed into another prime (27694982459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13847490729 + 13847490730.

It is an arithmetic number, because the mean of its divisors is an integer number (13847490730).

Almost surely, 2^27694981459 is an apocalyptic number.

27694981459 is a deficient number, since it is larger than the sum of its proper divisors (1).

27694981459 is an equidigital number, since it uses as much as digits as its factorization.

27694981459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 64.

The spelling of 27694981459 in words is "twenty-seven billion, six hundred ninety-four million, nine hundred eighty-one thousand, four hundred fifty-nine".