16800821701 has 2 divisors, whose sum is σ = 16800821702. Its totient is φ = 16800821700.

The previous prime is 16800821629. The next prime is 16800821759. The reversal of 16800821701 is 10712800861.

16800821701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11409444225 + 5391377476 = 106815^2 + 73426^2 .

It is a cyclic number.

It is not a de Polignac number, because 16800821701 - 2⁹ = 16800821189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16800824701) 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, 8400410850 + 8400410851.

It is an arithmetic number, because the mean of its divisors is an integer number (8400410851).

Almost surely, 2^16800821701 is an apocalyptic number.

It is an amenable number.

16800821701 is a deficient number, since it is larger than the sum of its proper divisors (1).

16800821701 is an equidigital number, since it uses as much as digits as its factorization.

16800821701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 34.

The spelling of 16800821701 in words is "sixteen billion, eight hundred million, eight hundred twenty-one thousand, seven hundred one".