16891556108 has 48 divisors (see below), whose sum is σ = 34969804800. Its totient is φ = 6985258560.

The previous prime is 16891556089. The next prime is 16891556153. The reversal of 16891556108 is 80165519861.

16891556108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1520213 + ... + 1531283.

It is an arithmetic number, because the mean of its divisors is an integer number (728537600).

Almost surely, 2^16891556108 is an apocalyptic number.

It is an amenable number.

16891556108 is an abundant number, since it is smaller than the sum of its proper divisors (18078248692).

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

16891556108 is a wasteful number, since it uses less digits than its factorization.

16891556108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990 (or 12988 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 50.

The spelling of 16891556108 in words is "sixteen billion, eight hundred ninety-one million, five hundred fifty-six thousand, one hundred eight".