27228481589 has 2 divisors, whose sum is σ = 27228481590. Its totient is φ = 27228481588.

The previous prime is 27228481531. The next prime is 27228481603. The reversal of 27228481589 is 98518482272.

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., 24906205489 + 2322276100 = 157817^2 + 48190^2 .

It is a cyclic number.

It is not a de Polignac number, because 27228481589 - 2²⁸ = 26960046133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27228481789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13614240794 + 13614240795.

It is an arithmetic number, because the mean of its divisors is an integer number (13614240795).

Almost surely, 2^27228481589 is an apocalyptic number.

It is an amenable number.

27228481589 is a deficient number, since it is larger than the sum of its proper divisors (1).

27228481589 is an equidigital number, since it uses as much as digits as its factorization.

27228481589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 56.

The spelling of 27228481589 in words is "twenty-seven billion, two hundred twenty-eight million, four hundred eighty-one thousand, five hundred eighty-nine".