16163223604445 has 16 divisors (see below), whose sum is σ = 20548903767408. Its totient is φ = 12162785034240.

The previous prime is 16163223604417. The next prime is 16163223604457. The reversal of 16163223604445 is 54440632236161.

It can be written as a sum of positive squares in 8 ways, for example, as 6266140407076 + 9897083197369 = 2503226^2 + 3145963^2 .

It is not a de Polignac number, because 16163223604445 - 2¹⁶ = 16163223538909 is a prime.

It is a super-2 number, since 2×16163223604445² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16163223604445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55882736 + ... + 56171225.

It is an arithmetic number, because the mean of its divisors is an integer number (1284306485463).

Almost surely, 2^{16163223604445} is an apocalyptic number.

It is an amenable number.

16163223604445 is a deficient number, since it is larger than the sum of its proper divisors (4385680162963).

16163223604445 is a wasteful number, since it uses less digits than its factorization.

16163223604445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112055680.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 16163223604445 in words is "sixteen trillion, one hundred sixty-three billion, two hundred twenty-three million, six hundred four thousand, four hundred forty-five".