16196809728 has 88 divisors (see below), whose sum is σ = 47095083360. Its totient is φ = 4908113920.

The previous prime is 16196809709. The next prime is 16196809763. The reversal of 16196809728 is 82790869161.

It is a tau number, because it is divible by the number of its divisors (88).

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205863 + ... + 273446.

Almost surely, 2^16196809728 is an apocalyptic number.

It is an amenable number.

16196809728 is an abundant number, since it is smaller than the sum of its proper divisors (30898273632).

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

16196809728 is a wasteful number, since it uses less digits than its factorization.

16196809728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479343 (or 479325 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 16196809728 in words is "sixteen billion, one hundred ninety-six million, eight hundred nine thousand, seven hundred twenty-eight".