16159685388 has 192 divisors, whose sum is σ = 48445931520. Its totient is φ = 4070361600.

The previous prime is 16159685357. The next prime is 16159685389. The reversal of 16159685388 is 88358695161.

It is a super-2 number, since 2×16159685388² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16159685389) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6780045 + ... + 6782427.

It is an arithmetic number, because the mean of its divisors is an integer number (252322560).

Almost surely, 2^16159685388 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 16159685388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24222965760).

16159685388 is an abundant number, since it is smaller than the sum of its proper divisors (32286246132).

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

16159685388 is a wasteful number, since it uses less digits than its factorization.

16159685388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2626 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 60.

The spelling of 16159685388 in words is "sixteen billion, one hundred fifty-nine million, six hundred eighty-five thousand, three hundred eighty-eight".