27423999289 has 2 divisors, whose sum is σ = 27423999290. Its totient is φ = 27423999288.

The previous prime is 27423999283. The next prime is 27423999307. The reversal of 27423999289 is 98299932472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15278196025 + 12145803264 = 123605^2 + 110208^2 .

It is a cyclic number.

It is not a de Polignac number, because 27423999289 - 2⁵ = 27423999257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27423999289.

It is not a weakly prime, because it can be changed into another prime (27423999283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13711999644 + 13711999645.

It is an arithmetic number, because the mean of its divisors is an integer number (13711999645).

Almost surely, 2^27423999289 is an apocalyptic number.

It is an amenable number.

27423999289 is a deficient number, since it is larger than the sum of its proper divisors (1).

27423999289 is an equidigital number, since it uses as much as digits as its factorization.

27423999289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 64.

The spelling of 27423999289 in words is "twenty-seven billion, four hundred twenty-three million, nine hundred ninety-nine thousand, two hundred eighty-nine".