16781070833 has 2 divisors, whose sum is σ = 16781070834. Its totient is φ = 16781070832.

The previous prime is 16781070827. The next prime is 16781070841. The reversal of 16781070833 is 33807018761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14735046544 + 2046024289 = 121388^2 + 45233^2 .

It is a cyclic number.

It is not a de Polignac number, because 16781070833 - 2¹² = 16781066737 is a prime.

It is not a weakly prime, because it can be changed into another prime (16781070853) 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, 8390535416 + 8390535417.

It is an arithmetic number, because the mean of its divisors is an integer number (8390535417).

Almost surely, 2^16781070833 is an apocalyptic number.

It is an amenable number.

16781070833 is a deficient number, since it is larger than the sum of its proper divisors (1).

16781070833 is an equidigital number, since it uses as much as digits as its factorization.

16781070833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 16781070833 in words is "sixteen billion, seven hundred eighty-one million, seventy thousand, eight hundred thirty-three".