27138198301 has 2 divisors, whose sum is σ = 27138198302. Its totient is φ = 27138198300.

The previous prime is 27138198287. The next prime is 27138198323. The reversal of 27138198301 is 10389183172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26953102276 + 185096025 = 164174^2 + 13605^2 .

It is a cyclic number.

It is not a de Polignac number, because 27138198301 - 2¹⁵ = 27138165533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27138198331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13569099150 + 13569099151.

It is an arithmetic number, because the mean of its divisors is an integer number (13569099151).

Almost surely, 2^27138198301 is an apocalyptic number.

It is an amenable number.

27138198301 is a deficient number, since it is larger than the sum of its proper divisors (1).

27138198301 is an equidigital number, since it uses as much as digits as its factorization.

27138198301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 27138198301 in words is "twenty-seven billion, one hundred thirty-eight million, one hundred ninety-eight thousand, three hundred one".