16220223644263 has 4 divisors (see below), whose sum is σ = 17073919625560. Its totient is φ = 15366527662968.

The previous prime is 16220223644173. The next prime is 16220223644291. The reversal of 16220223644263 is 36244632202261.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16220223644263 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 (16220283644263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426847990620 + ... + 426847990657.

It is an arithmetic number, because the mean of its divisors is an integer number (4268479906390).

Almost surely, 2^{16220223644263} is an apocalyptic number.

16220223644263 is a deficient number, since it is larger than the sum of its proper divisors (853695981297).

16220223644263 is an equidigital number, since it uses as much as digits as its factorization.

16220223644263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853695981296.

The product of its (nonzero) digits is 995328, while the sum is 43.

The spelling of 16220223644263 in words is "sixteen trillion, two hundred twenty billion, two hundred twenty-three million, six hundred forty-four thousand, two hundred sixty-three".