27800718713 has 2 divisors, whose sum is σ = 27800718714. Its totient is φ = 27800718712.

The previous prime is 27800718703. The next prime is 27800718733. The reversal of 27800718713 is 31781700872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15917102569 + 11883616144 = 126163^2 + 109012^2 .

It is a cyclic number.

It is not a de Polignac number, because 27800718713 - 2⁴ = 27800718697 is a prime.

It is not a weakly prime, because it can be changed into another prime (27800718703) 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, 13900359356 + 13900359357.

It is an arithmetic number, because the mean of its divisors is an integer number (13900359357).

Almost surely, 2^27800718713 is an apocalyptic number.

It is an amenable number.

27800718713 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800718713 is an equidigital number, since it uses as much as digits as its factorization.

27800718713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 44.

The spelling of 27800718713 in words is "twenty-seven billion, eight hundred million, seven hundred eighteen thousand, seven hundred thirteen".