27786199841 has 2 divisors, whose sum is σ = 27786199842. Its totient is φ = 27786199840.

The previous prime is 27786199829. The next prime is 27786199873. The reversal of 27786199841 is 14899168772.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25633611025 + 2152588816 = 160105^2 + 46396^2 .

It is a cyclic number.

It is not a de Polignac number, because 27786199841 - 2¹⁴ = 27786183457 is a prime.

It is not a weakly prime, because it can be changed into another prime (27786199891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13893099920 + 13893099921.

It is an arithmetic number, because the mean of its divisors is an integer number (13893099921).

Almost surely, 2^27786199841 is an apocalyptic number.

It is an amenable number.

27786199841 is a deficient number, since it is larger than the sum of its proper divisors (1).

27786199841 is an equidigital number, since it uses as much as digits as its factorization.

27786199841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 62.

The spelling of 27786199841 in words is "twenty-seven billion, seven hundred eighty-six million, one hundred ninety-nine thousand, eight hundred forty-one".