16891006916 has 24 divisors (see below), whose sum is σ = 35560015680. Its totient is φ = 6858002592.

The previous prime is 16891006907. The next prime is 16891006963. The reversal of 16891006916 is 61960019861.

It is a super-2 number, since 2×16891006916² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15874475 + ... + 15875538.

It is an arithmetic number, because the mean of its divisors is an integer number (1481667320).

Almost surely, 2^16891006916 is an apocalyptic number.

It is an amenable number.

16891006916 is an abundant number, since it is smaller than the sum of its proper divisors (18669008764).

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

16891006916 is a wasteful number, since it uses less digits than its factorization.

16891006916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31750043 (or 31750041 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 16891006916 in words is "sixteen billion, eight hundred ninety-one million, six thousand, nine hundred sixteen".