27078105601 has 2 divisors, whose sum is σ = 27078105602. Its totient is φ = 27078105600.

The previous prime is 27078105581. The next prime is 27078105619. The reversal of 27078105601 is 10650187072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22037105601 + 5041000000 = 148449^2 + 71000^2 .

It is a cyclic number.

It is not a de Polignac number, because 27078105601 - 2¹¹ = 27078103553 is a prime.

It is not a weakly prime, because it can be changed into another prime (27078105701) 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, 13539052800 + 13539052801.

It is an arithmetic number, because the mean of its divisors is an integer number (13539052801).

Almost surely, 2^27078105601 is an apocalyptic number.

It is an amenable number.

27078105601 is a deficient number, since it is larger than the sum of its proper divisors (1).

27078105601 is an equidigital number, since it uses as much as digits as its factorization.

27078105601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 27078105601 in words is "twenty-seven billion, seventy-eight million, one hundred five thousand, six hundred one".