16890685396 has 96 divisors (see below), whose sum is σ = 32887239840. Its totient is φ = 7588159488.

The previous prime is 16890685373. The next prime is 16890685423. The reversal of 16890685396 is 69358609861.

It can be written as a sum of positive squares in 16 ways, for example, as 15843256900 + 1047428496 = 125870^2 + 32364^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72492096 + ... + 72492328.

It is an arithmetic number, because the mean of its divisors is an integer number (342575415).

Almost surely, 2^16890685396 is an apocalyptic number.

It is an amenable number.

16890685396 is a deficient number, since it is larger than the sum of its proper divisors (15996554444).

16890685396 is a wasteful number, since it uses less digits than its factorization.

16890685396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 61.

The spelling of 16890685396 in words is "sixteen billion, eight hundred ninety million, six hundred eighty-five thousand, three hundred ninety-six".