16681886498 has 8 divisors (see below), whose sum is σ = 25040593260. Its totient is φ = 8335022080.

The previous prime is 16681886477. The next prime is 16681886537. The reversal of 16681886498 is 89468818661.

It can be written as a sum of positive squares in 2 ways, for example, as 16677914449 + 3972049 = 129143^2 + 1993^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2957063 + ... + 2962698.

Almost surely, 2^16681886498 is an apocalyptic number.

16681886498 is a deficient number, since it is larger than the sum of its proper divisors (8358706762).

16681886498 is a wasteful number, since it uses less digits than its factorization.

16681886498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921172.

The product of its digits is 31850496, while the sum is 65.

The spelling of 16681886498 in words is "sixteen billion, six hundred eighty-one million, eight hundred eighty-six thousand, four hundred ninety-eight".