16444456556 has 24 divisors (see below), whose sum is σ = 32758919424. Its totient is φ = 7149763280.

The previous prime is 16444456519. The next prime is 16444456573. The reversal of 16444456556 is 65565444461.

It is a super-2 number, since 2×16444456556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8123720 + ... + 8125743.

It is an arithmetic number, because the mean of its divisors is an integer number (1364954976).

Almost surely, 2^16444456556 is an apocalyptic number.

It is an amenable number.

16444456556 is a deficient number, since it is larger than the sum of its proper divisors (16314462868).

16444456556 is a wasteful number, since it uses less digits than its factorization.

16444456556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16249501 (or 16249499 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 50.

The spelling of 16444456556 in words is "sixteen billion, four hundred forty-four million, four hundred fifty-six thousand, five hundred fifty-six".