16890685373 has 2 divisors, whose sum is σ = 16890685374. Its totient is φ = 16890685372.

The previous prime is 16890685349. The next prime is 16890685423. The reversal of 16890685373 is 37358609861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15171587929 + 1719097444 = 123173^2 + 41462^2 .

It is a cyclic number.

It is not a de Polignac number, because 16890685373 - 2⁸ = 16890685117 is a prime.

It is a super-2 number, since 2×16890685373² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16890685073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445342686 + 8445342687.

It is an arithmetic number, because the mean of its divisors is an integer number (8445342687).

Almost surely, 2^16890685373 is an apocalyptic number.

It is an amenable number.

16890685373 is a deficient number, since it is larger than the sum of its proper divisors (1).

16890685373 is an equidigital number, since it uses as much as digits as its factorization.

16890685373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 16890685373 in words is "sixteen billion, eight hundred ninety million, six hundred eighty-five thousand, three hundred seventy-three".