27365430497 has 2 divisors, whose sum is σ = 27365430498. Its totient is φ = 27365430496.

The previous prime is 27365430493. The next prime is 27365430527. The reversal of 27365430497 is 79403456372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27151130176 + 214300321 = 164776^2 + 14639^2 .

It is a cyclic number.

It is not a de Polignac number, because 27365430497 - 2² = 27365430493 is a prime.

It is a super-2 number, since 2×27365430497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27365430493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13682715248 + 13682715249.

It is an arithmetic number, because the mean of its divisors is an integer number (13682715249).

Almost surely, 2^27365430497 is an apocalyptic number.

It is an amenable number.

27365430497 is a deficient number, since it is larger than the sum of its proper divisors (1).

27365430497 is an equidigital number, since it uses as much as digits as its factorization.

27365430497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 27365430497 in words is "twenty-seven billion, three hundred sixty-five million, four hundred thirty thousand, four hundred ninety-seven".