16550707209 has 8 divisors (see below), whose sum is σ = 22429373952. Its totient is φ = 10852922640.

The previous prime is 16550707141. The next prime is 16550707231. The reversal of 16550707209 is 90270705561.

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

It is not a de Polignac number, because 16550707209 - 2¹⁶ = 16550641673 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16550707279) 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, 45220329 + ... + 45220694.

It is an arithmetic number, because the mean of its divisors is an integer number (2803671744).

Almost surely, 2^16550707209 is an apocalyptic number.

It is an amenable number.

16550707209 is a deficient number, since it is larger than the sum of its proper divisors (5878666743).

16550707209 is an equidigital number, since it uses as much as digits as its factorization.

16550707209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90441087.

The product of its (nonzero) digits is 132300, while the sum is 42.

The spelling of 16550707209 in words is "sixteen billion, five hundred fifty million, seven hundred seven thousand, two hundred nine".