16685011896 has 128 divisors (see below), whose sum is σ = 50845294080. Its totient is φ = 4453871616.

The previous prime is 16685011813. The next prime is 16685011897. The reversal of 16685011896 is 69811058661.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16685011897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369951 + ... + 412593.

It is an arithmetic number, because the mean of its divisors is an integer number (397228860).

Almost surely, 2^16685011896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16685011896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25422647040).

16685011896 is an abundant number, since it is smaller than the sum of its proper divisors (34160282184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16685011896 is a wasteful number, since it uses less digits than its factorization.

16685011896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42813 (or 42809 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The spelling of 16685011896 in words is "sixteen billion, six hundred eighty-five million, eleven thousand, eight hundred ninety-six".