16681676009 has 8 divisors (see below), whose sum is σ = 16871576832. Its totient is φ = 16492260400.

The previous prime is 16681675987. The next prime is 16681676023. The reversal of 16681676009 is 90067618661.

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 16681676009 - 2³² = 12386708713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16681676909) 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, 51929 + ... + 189894.

It is an arithmetic number, because the mean of its divisors is an integer number (2108947104).

Almost surely, 2^16681676009 is an apocalyptic number.

It is an amenable number.

16681676009 is a deficient number, since it is larger than the sum of its proper divisors (189900823).

16681676009 is a wasteful number, since it uses less digits than its factorization.

16681676009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242607.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 16681676009 in words is "sixteen billion, six hundred eighty-one million, six hundred seventy-six thousand, nine".