16828696981 has 2 divisors, whose sum is σ = 16828696982. Its totient is φ = 16828696980.

The previous prime is 16828696979. The next prime is 16828696991. The reversal of 16828696981 is 18969682861.

16828696981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14644630225 + 2184066756 = 121015^2 + 46734^2 .

It is a cyclic number.

It is not a de Polignac number, because 16828696981 - 2¹ = 16828696979 is a prime.

It is a super-2 number, since 2×16828696981² (a number of 21 digits) contains 22 as substring.

Together with 16828696979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16828696991) 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, 8414348490 + 8414348491.

It is an arithmetic number, because the mean of its divisors is an integer number (8414348491).

Almost surely, 2^16828696981 is an apocalyptic number.

It is an amenable number.

16828696981 is a deficient number, since it is larger than the sum of its proper divisors (1).

16828696981 is an equidigital number, since it uses as much as digits as its factorization.

16828696981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17915904, while the sum is 64.

The spelling of 16828696981 in words is "sixteen billion, eight hundred twenty-eight million, six hundred ninety-six thousand, nine hundred eighty-one".