16889498861 has 8 divisors (see below), whose sum is σ = 18060060024. Its totient is φ = 15738611200.

The previous prime is 16889498839. The next prime is 16889498881.

16889498861 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 13266662761 + 3622836100 = 115181^2 + 60190^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16889498861 - 2³⁰ = 15815757037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16889498791 and 16889498800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16889498831) 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, 4916600 + ... + 4920033.

It is an arithmetic number, because the mean of its divisors is an integer number (2257507503).

Almost surely, 2^16889498861 is an apocalyptic number.

It is an amenable number.

16889498861 is a deficient number, since it is larger than the sum of its proper divisors (1170561163).

16889498861 is a wasteful number, since it uses less digits than its factorization.

16889498861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9836751.

The product of its digits is 47775744, while the sum is 68.

The spelling of 16889498861 in words is "sixteen billion, eight hundred eighty-nine million, four hundred ninety-eight thousand, eight hundred sixty-one".