27380913839 has 2 divisors, whose sum is σ = 27380913840. Its totient is φ = 27380913838.

The previous prime is 27380913829. The next prime is 27380913853. The reversal of 27380913839 is 93831908372.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27380913839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27380913809) 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, 13690456919 + 13690456920.

It is an arithmetic number, because the mean of its divisors is an integer number (13690456920).

Almost surely, 2^27380913839 is an apocalyptic number.

27380913839 is a deficient number, since it is larger than the sum of its proper divisors (1).

27380913839 is an equidigital number, since it uses as much as digits as its factorization.

27380913839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 27380913839 in words is "twenty-seven billion, three hundred eighty million, nine hundred thirteen thousand, eight hundred thirty-nine".