27432765361 has 2 divisors, whose sum is σ = 27432765362. Its totient is φ = 27432765360.

The previous prime is 27432765359. The next prime is 27432765379. The reversal of 27432765361 is 16356723472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24105667600 + 3327097761 = 155260^2 + 57681^2 .

It is a cyclic number.

It is not a de Polignac number, because 27432765361 - 2¹ = 27432765359 is a prime.

Together with 27432765359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27432765961) 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, 13716382680 + 13716382681.

It is an arithmetic number, because the mean of its divisors is an integer number (13716382681).

Almost surely, 2^27432765361 is an apocalyptic number.

It is an amenable number.

27432765361 is a deficient number, since it is larger than the sum of its proper divisors (1).

27432765361 is an equidigital number, since it uses as much as digits as its factorization.

27432765361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 46.

The spelling of 27432765361 in words is "twenty-seven billion, four hundred thirty-two million, seven hundred sixty-five thousand, three hundred sixty-one".