27131118232489 has 2 divisors, whose sum is σ = 27131118232490. Its totient is φ = 27131118232488.

The previous prime is 27131118232433. The next prime is 27131118232549. The reversal of 27131118232489 is 98423281113172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22653154378089 + 4477963854400 = 4759533^2 + 2116120^2 .

It is a cyclic number.

It is not a de Polignac number, because 27131118232489 - 2³⁹ = 26581362418601 is a prime.

It is not a weakly prime, because it can be changed into another prime (27131118032489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13565559116244 + 13565559116245.

It is an arithmetic number, because the mean of its divisors is an integer number (13565559116245).

Almost surely, 2^{27131118232489} is an apocalyptic number.

It is an amenable number.

27131118232489 is a deficient number, since it is larger than the sum of its proper divisors (1).

27131118232489 is an equidigital number, since it uses as much as digits as its factorization.

27131118232489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 52.

The spelling of 27131118232489 in words is "twenty-seven trillion, one hundred thirty-one billion, one hundred eighteen million, two hundred thirty-two thousand, four hundred eighty-nine".