16449490855 has 24 divisors (see below), whose sum is σ = 22968782928. Its totient is φ = 11276391168.

The previous prime is 16449490817. The next prime is 16449490861. The reversal of 16449490855 is 55809494461.

It is a de Polignac number, because none of the positive numbers 2^k-16449490855 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16449490796 and 16449490805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1096767 + ... + 1111663.

It is an arithmetic number, because the mean of its divisors is an integer number (957032622).

Almost surely, 2^16449490855 is an apocalyptic number.

16449490855 is a deficient number, since it is larger than the sum of its proper divisors (6519292073).

16449490855 is a wasteful number, since it uses less digits than its factorization.

16449490855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19423 (or 19416 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 16449490855 in words is "sixteen billion, four hundred forty-nine million, four hundred ninety thousand, eight hundred fifty-five".