827538682909 has 2 divisors, whose sum is σ = 827538682910. Its totient is φ = 827538682908.

The previous prime is 827538682877. The next prime is 827538682939. The reversal of 827538682909 is 909286835728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 825957427684 + 1581255225 = 908822^2 + 39765^2 .

It is a cyclic number.

It is not a de Polignac number, because 827538682909 - 2⁵ = 827538682877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827538682939) 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, 413769341454 + 413769341455.

It is an arithmetic number, because the mean of its divisors is an integer number (413769341455).

Almost surely, 2^827538682909 is an apocalyptic number.

It is an amenable number.

827538682909 is a deficient number, since it is larger than the sum of its proper divisors (1).

827538682909 is an equidigital number, since it uses as much as digits as its factorization.

827538682909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 827538682909 in words is "eight hundred twenty-seven billion, five hundred thirty-eight million, six hundred eighty-two thousand, nine hundred nine".