16689637009 has 8 divisors (see below), whose sum is σ = 16812804960. Its totient is φ = 16566513600.

The previous prime is 16689636989. The next prime is 16689637037. The reversal of 16689637009 is 90073698661.

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 16689637009 - 2⁷ = 16689636881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16689637049) 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, 1317114 + ... + 1329724.

It is an arithmetic number, because the mean of its divisors is an integer number (2101600620).

Almost surely, 2^16689637009 is an apocalyptic number.

It is an amenable number.

16689637009 is a deficient number, since it is larger than the sum of its proper divisors (123167951).

16689637009 is a wasteful number, since it uses less digits than its factorization.

16689637009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22271.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 16689637009 in words is "sixteen billion, six hundred eighty-nine million, six hundred thirty-seven thousand, nine".