27679242289 has 2 divisors, whose sum is σ = 27679242290. Its totient is φ = 27679242288.

The previous prime is 27679242233. The next prime is 27679242317. The reversal of 27679242289 is 98224297672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20272918689 + 7406323600 = 142383^2 + 86060^2 .

It is a cyclic number.

It is not a de Polignac number, because 27679242289 - 2¹¹ = 27679240241 is a prime.

It is a super-2 number, since 2×27679242289² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27670242289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13839621144 + 13839621145.

It is an arithmetic number, because the mean of its divisors is an integer number (13839621145).

Almost surely, 2^27679242289 is an apocalyptic number.

It is an amenable number.

27679242289 is a deficient number, since it is larger than the sum of its proper divisors (1).

27679242289 is an equidigital number, since it uses as much as digits as its factorization.

27679242289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 58.

The spelling of 27679242289 in words is "twenty-seven billion, six hundred seventy-nine million, two hundred forty-two thousand, two hundred eighty-nine".