16856227933 has 2 divisors, whose sum is σ = 16856227934. Its totient is φ = 16856227932.

The previous prime is 16856227877. The next prime is 16856227963. The reversal of 16856227933 is 33972265861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12410405604 + 4445822329 = 111402^2 + 66677^2 .

It is a cyclic number.

It is not a de Polignac number, because 16856227933 - 2²¹ = 16854130781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16856227963) 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, 8428113966 + 8428113967.

It is an arithmetic number, because the mean of its divisors is an integer number (8428113967).

Almost surely, 2^16856227933 is an apocalyptic number.

It is an amenable number.

16856227933 is a deficient number, since it is larger than the sum of its proper divisors (1).

16856227933 is an equidigital number, since it uses as much as digits as its factorization.

16856227933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The spelling of 16856227933 in words is "sixteen billion, eight hundred fifty-six million, two hundred twenty-seven thousand, nine hundred thirty-three".