16444361856 has 64 divisors (see below), whose sum is σ = 47040376320. Its totient is φ = 5059802112.

The previous prime is 16444361839. The next prime is 16444361861. The reversal of 16444361856 is 65816344461.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642080 + ... + 1652063.

It is an arithmetic number, because the mean of its divisors is an integer number (735005880).

Almost surely, 2^16444361856 is an apocalyptic number.

16444361856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16444361856 is an abundant number, since it is smaller than the sum of its proper divisors (30596014464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16444361856 is a wasteful number, since it uses less digits than its factorization.

16444361856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294173 (or 3294161 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The spelling of 16444361856 in words is "sixteen billion, four hundred forty-four million, three hundred sixty-one thousand, eight hundred fifty-six".