16450138609 has 8 divisors (see below), whose sum is σ = 16841610720. Its totient is φ = 16059071616.

The previous prime is 16450138577. The next prime is 16450138657. The reversal of 16450138609 is 90683105461.

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 16450138609 - 2⁵ = 16450138577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16450138699) 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, 18304 + ... + 182305.

It is an arithmetic number, because the mean of its divisors is an integer number (2105201340).

Almost surely, 2^16450138609 is an apocalyptic number.

It is an amenable number.

16450138609 is a deficient number, since it is larger than the sum of its proper divisors (391472111).

16450138609 is a wasteful number, since it uses less digits than its factorization.

16450138609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202559.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 16450138609 in words is "sixteen billion, four hundred fifty million, one hundred thirty-eight thousand, six hundred nine".