16859216905 has 16 divisors (see below), whose sum is σ = 20605824000. Its totient is φ = 13238458560.

The previous prime is 16859216887. The next prime is 16859216939. The reversal of 16859216905 is 50961295861.

It is not a de Polignac number, because 16859216905 - 2⁹ = 16859216393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88396 + ... + 203794.

It is an arithmetic number, because the mean of its divisors is an integer number (1287864000).

Almost surely, 2^16859216905 is an apocalyptic number.

It is an amenable number.

16859216905 is a deficient number, since it is larger than the sum of its proper divisors (3746607095).

16859216905 is a wasteful number, since it uses less digits than its factorization.

16859216905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115944.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 16859216905 in words is "sixteen billion, eight hundred fifty-nine million, two hundred sixteen thousand, nine hundred five".