827339988697 has 2 divisors, whose sum is σ = 827339988698. Its totient is φ = 827339988696.

The previous prime is 827339988641. The next prime is 827339988767. The reversal of 827339988697 is 796889933728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555376695696 + 271963293001 = 745236^2 + 521501^2 .

It is a cyclic number.

It is not a de Polignac number, because 827339988697 - 2²³ = 827331600089 is a prime.

It is not a weakly prime, because it can be changed into another prime (827339988637) 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, 413669994348 + 413669994349.

It is an arithmetic number, because the mean of its divisors is an integer number (413669994349).

Almost surely, 2^827339988697 is an apocalyptic number.

It is an amenable number.

827339988697 is a deficient number, since it is larger than the sum of its proper divisors (1).

827339988697 is an equidigital number, since it uses as much as digits as its factorization.

827339988697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1975228416, while the sum is 79.

The spelling of 827339988697 in words is "eight hundred twenty-seven billion, three hundred thirty-nine million, nine hundred eighty-eight thousand, six hundred ninety-seven".