27804399841 has 2 divisors, whose sum is σ = 27804399842. Its totient is φ = 27804399840.

The previous prime is 27804399817. The next prime is 27804399851. The reversal of 27804399841 is 14899340872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26008335441 + 1796064400 = 161271^2 + 42380^2 .

It is a cyclic number.

It is not a de Polignac number, because 27804399841 - 2¹¹ = 27804397793 is a prime.

It is not a weakly prime, because it can be changed into another prime (27804399811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13902199920 + 13902199921.

It is an arithmetic number, because the mean of its divisors is an integer number (13902199921).

Almost surely, 2^27804399841 is an apocalyptic number.

It is an amenable number.

27804399841 is a deficient number, since it is larger than the sum of its proper divisors (1).

27804399841 is an equidigital number, since it uses as much as digits as its factorization.

27804399841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 27804399841 in words is "twenty-seven billion, eight hundred four million, three hundred ninety-nine thousand, eight hundred forty-one".