27081651433 has 2 divisors, whose sum is σ = 27081651434. Its totient is φ = 27081651432.

The previous prime is 27081651427. The next prime is 27081651469. The reversal of 27081651433 is 33415618072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16446267049 + 10635384384 = 128243^2 + 103128^2 .

It is a cyclic number.

It is not a de Polignac number, because 27081651433 - 2¹³ = 27081643241 is a prime.

It is not a weakly prime, because it can be changed into another prime (27081651413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13540825716 + 13540825717.

It is an arithmetic number, because the mean of its divisors is an integer number (13540825717).

Almost surely, 2^27081651433 is an apocalyptic number.

It is an amenable number.

27081651433 is a deficient number, since it is larger than the sum of its proper divisors (1).

27081651433 is an equidigital number, since it uses as much as digits as its factorization.

27081651433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 27081651433 in words is "twenty-seven billion, eighty-one million, six hundred fifty-one thousand, four hundred thirty-three".