16645651116 has 48 divisors (see below), whose sum is σ = 41136820704. Its totient is φ = 5220606976.

The previous prime is 16645651091. The next prime is 16645651163. The reversal of 16645651116 is 61115654661.

It is a super-4 number, since 4×16645651116⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808486 + ... + 828818.

It is an arithmetic number, because the mean of its divisors is an integer number (857017098).

Almost surely, 2^16645651116 is an apocalyptic number.

It is an amenable number.

16645651116 is an abundant number, since it is smaller than the sum of its proper divisors (24491169588).

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

16645651116 is a wasteful number, since it uses less digits than its factorization.

16645651116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24370 (or 24368 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The spelling of 16645651116 in words is "sixteen billion, six hundred forty-five million, six hundred fifty-one thousand, one hundred sixteen".