16279054821 has 12 divisors (see below), whose sum is σ = 24751779520. Its totient is φ = 10281508200.

The previous prime is 16279054817. The next prime is 16279054829. The reversal of 16279054821 is 12845097261.

16279054821 is a `hidden beast` number, since 16 + 2 + 7 + 90 + 548 + 2 + 1 = 666.

It is not a de Polignac number, because 16279054821 - 2² = 16279054817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16279054829) 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 11 ways as a sum of consecutive naturals, for example, 47599405 + ... + 47599746.

Almost surely, 2^16279054821 is an apocalyptic number.

It is an amenable number.

16279054821 is a deficient number, since it is larger than the sum of its proper divisors (8472724699).

16279054821 is a wasteful number, since it uses less digits than its factorization.

16279054821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95199176 (or 95199173 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 16279054821 in words is "sixteen billion, two hundred seventy-nine million, fifty-four thousand, eight hundred twenty-one".