27641245213 has 2 divisors, whose sum is σ = 27641245214. Its totient is φ = 27641245212.

The previous prime is 27641245211. The next prime is 27641245231. The reversal of 27641245213 is 31254214672.

Together with next prime (27641245231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23599718884 + 4041526329 = 153622^2 + 63573^2 .

It is a cyclic number.

It is not a de Polignac number, because 27641245213 - 2¹ = 27641245211 is a prime.

Together with 27641245211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27641245211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13820622606 + 13820622607.

It is an arithmetic number, because the mean of its divisors is an integer number (13820622607).

Almost surely, 2^27641245213 is an apocalyptic number.

It is an amenable number.

27641245213 is a deficient number, since it is larger than the sum of its proper divisors (1).

27641245213 is an equidigital number, since it uses as much as digits as its factorization.

27641245213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 37.

Adding to 27641245213 its reverse (31254214672), we get a palindrome (58895459885).

The spelling of 27641245213 in words is "twenty-seven billion, six hundred forty-one million, two hundred forty-five thousand, two hundred thirteen".