16904135813 has 2 divisors, whose sum is σ = 16904135814. Its totient is φ = 16904135812.

The previous prime is 16904135779. The next prime is 16904135851. The reversal of 16904135813 is 31853140961.

16904135813 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., 14911584769 + 1992551044 = 122113^2 + 44638^2 .

It is an emirp because it is prime and its reverse (31853140961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16904135813 - 2⁸ = 16904135557 is a prime.

It is a super-3 number, since 3×16904135813³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16904135513) 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, 8452067906 + 8452067907.

It is an arithmetic number, because the mean of its divisors is an integer number (8452067907).

Almost surely, 2^16904135813 is an apocalyptic number.

It is an amenable number.

16904135813 is a deficient number, since it is larger than the sum of its proper divisors (1).

16904135813 is an equidigital number, since it uses as much as digits as its factorization.

16904135813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 16904135813 in words is "sixteen billion, nine hundred four million, one hundred thirty-five thousand, eight hundred thirteen".