16800000861 has 8 divisors (see below), whose sum is σ = 25600001344. Its totient is φ = 9600000480.

The previous prime is 16800000851. The next prime is 16800000871.

16800000861 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (16800000851) and next prime (16800000871).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16800000861 - 2⁵ = 16800000829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16800000851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400000000 + ... + 400000041.

It is an arithmetic number, because the mean of its divisors is an integer number (3200000168).

Almost surely, 2^16800000861 is an apocalyptic number.

It is an amenable number.

16800000861 is a deficient number, since it is larger than the sum of its proper divisors (8800000483).

16800000861 is an equidigital number, since it uses as much as digits as its factorization.

16800000861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800000051.

The product of its (nonzero) digits is 2304, while the sum is 30.

It can be divided in two parts, 16800000 and 861, that added together give a palindrome (16800861).

The spelling of 16800000861 in words is "sixteen billion, eight hundred million, eight hundred sixty-one", and thus it is an aban number.