216326324444454 has 72 divisors (see below), whose sum is σ = 554168841312528. Its totient is φ = 60794283201120.

The previous prime is 216326324444431. The next prime is 216326324444471. The reversal of 216326324444454 is 454444423623612.

216326324444454 is a `hidden beast` number, since 2 + 1 + 63 + 26 + 32 + 44 + 44 + 454 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216326324444454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2010339162 + ... + 2010446765.

It is an arithmetic number, because the mean of its divisors is an integer number (7696789462674).

Almost surely, 2^{216326324444454} is an apocalyptic number.

216326324444454 is an abundant number, since it is smaller than the sum of its proper divisors (337842516868074).

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

216326324444454 is a wasteful number, since it uses less digits than its factorization.

216326324444454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020786010 (or 4020786000 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 54.

The spelling of 216326324444454 in words is "two hundred sixteen trillion, three hundred twenty-six billion, three hundred twenty-four million, four hundred forty-four thousand, four hundred fifty-four".