16223745308279 has 4 divisors (see below), whose sum is σ = 16529853710376. Its totient is φ = 15917636906184.

The previous prime is 16223745308263. The next prime is 16223745308291. The reversal of 16223745308279 is 97280354732261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16223745308279 - 2⁴ = 16223745308263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223745358279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153054200969 + ... + 153054201074.

It is an arithmetic number, because the mean of its divisors is an integer number (4132463427594).

It is a 2-persistent number, because it is pandigital, and so is 2⋅16223745308279 = 32447490616558, but 3⋅16223745308279 = 48671235924837 is not.

Almost surely, 2^{16223745308279} is an apocalyptic number.

16223745308279 is a deficient number, since it is larger than the sum of its proper divisors (306108402097).

16223745308279 is an equidigital number, since it uses as much as digits as its factorization.

16223745308279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306108402096.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 16223745308279 in words is "sixteen trillion, two hundred twenty-three billion, seven hundred forty-five million, three hundred eight thousand, two hundred seventy-nine".