16861128752 has 20 divisors (see below), whose sum is σ = 35181394080. Its totient is φ = 7782059328.

The previous prime is 16861128721. The next prime is 16861128829. The reversal of 16861128752 is 25782116861.

It is a junction number, because it is equal to n+sod(n) for n = 16861128697 and 16861128706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40531352 + ... + 40531767.

It is an arithmetic number, because the mean of its divisors is an integer number (1759069704).

Almost surely, 2^16861128752 is an apocalyptic number.

It is an amenable number.

16861128752 is an abundant number, since it is smaller than the sum of its proper divisors (18320265328).

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

16861128752 is a wasteful number, since it uses less digits than its factorization.

16861128752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81063140 (or 81063134 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The spelling of 16861128752 in words is "sixteen billion, eight hundred sixty-one million, one hundred twenty-eight thousand, seven hundred fifty-two".