27942733289 has 2 divisors, whose sum is σ = 27942733290. Its totient is φ = 27942733288.

The previous prime is 27942733279. The next prime is 27942733361. The reversal of 27942733289 is 98233724972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14401920064 + 13540813225 = 120008^2 + 116365^2 .

It is a cyclic number.

It is not a de Polignac number, because 27942733289 - 2⁸ = 27942733033 is a prime.

It is not a weakly prime, because it can be changed into another prime (27942733279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13971366644 + 13971366645.

It is an arithmetic number, because the mean of its divisors is an integer number (13971366645).

Almost surely, 2^27942733289 is an apocalyptic number.

It is an amenable number.

27942733289 is a deficient number, since it is larger than the sum of its proper divisors (1).

27942733289 is an equidigital number, since it uses as much as digits as its factorization.

27942733289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 56.

The spelling of 27942733289 in words is "twenty-seven billion, nine hundred forty-two million, seven hundred thirty-three thousand, two hundred eighty-nine".