27066050197 has 2 divisors, whose sum is σ = 27066050198. Its totient is φ = 27066050196.

The previous prime is 27066050177. The next prime is 27066050257. The reversal of 27066050197 is 79105066072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25378401636 + 1687648561 = 159306^2 + 41081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27066050197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27066050177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13533025098 + 13533025099.

It is an arithmetic number, because the mean of its divisors is an integer number (13533025099).

Almost surely, 2^27066050197 is an apocalyptic number.

It is an amenable number.

27066050197 is a deficient number, since it is larger than the sum of its proper divisors (1).

27066050197 is an equidigital number, since it uses as much as digits as its factorization.

27066050197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 43.

The spelling of 27066050197 in words is "twenty-seven billion, sixty-six million, fifty thousand, one hundred ninety-seven".