16217837805 has 32 divisors (see below), whose sum is σ = 28002127104. Its totient is φ = 7967725056.

The previous prime is 16217837791. The next prime is 16217837843. The reversal of 16217837805 is 50873871261.

It is a happy number.

16217837805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16217837805 - 2⁴ = 16217837789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9577 + ... + 180353.

It is an arithmetic number, because the mean of its divisors is an integer number (875066472).

Almost surely, 2^16217837805 is an apocalyptic number.

16217837805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16217837805 is a deficient number, since it is larger than the sum of its proper divisors (11784289299).

16217837805 is a wasteful number, since it uses less digits than its factorization.

16217837805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171285.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 16217837805 in words is "sixteen billion, two hundred seventeen million, eight hundred thirty-seven thousand, eight hundred five".