27804000517 has 2 divisors, whose sum is σ = 27804000518. Its totient is φ = 27804000516.

The previous prime is 27804000503. The next prime is 27804000527. The reversal of 27804000517 is 71500040872.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21314248036 + 6489752481 = 145994^2 + 80559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27804000517 is a prime.

It is a super-3 number, since 3×27804000517³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27804000527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13902000258 + 13902000259.

It is an arithmetic number, because the mean of its divisors is an integer number (13902000259).

Almost surely, 2^27804000517 is an apocalyptic number.

It is an amenable number.

27804000517 is a deficient number, since it is larger than the sum of its proper divisors (1).

27804000517 is an equidigital number, since it uses as much as digits as its factorization.

27804000517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 34.

The spelling of 27804000517 in words is "twenty-seven billion, eight hundred four million, five hundred seventeen", and thus it is an aban number.