16222766809 has 8 divisors (see below), whose sum is σ = 16688247048. Its totient is φ = 15758709120.

The previous prime is 16222766803. The next prime is 16222766849. The reversal of 16222766809 is 90866722261.

It can be written as a sum of positive squares in 4 ways, for example, as 2811968784 + 13410798025 = 53028^2 + 115805^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16222766809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16222766803) 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, 332482 + ... + 378139.

It is an arithmetic number, because the mean of its divisors is an integer number (2086030881).

Almost surely, 2^16222766809 is an apocalyptic number.

It is an amenable number.

16222766809 is a deficient number, since it is larger than the sum of its proper divisors (465480239).

16222766809 is an equidigital number, since it uses as much as digits as its factorization.

16222766809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711275.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 16222766809 in words is "sixteen billion, two hundred twenty-two million, seven hundred sixty-six thousand, eight hundred nine".