16718851705 has 16 divisors (see below), whose sum is σ = 21354015744. Its totient is φ = 12522392320.

The previous prime is 16718851687. The next prime is 16718851727. The reversal of 16718851705 is 50715881761.

It is not a de Polignac number, because 16718851705 - 2¹¹ = 16718849657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 498667 + ... + 531136.

It is an arithmetic number, because the mean of its divisors is an integer number (1334625984).

Almost surely, 2^16718851705 is an apocalyptic number.

It is an amenable number.

16718851705 is a deficient number, since it is larger than the sum of its proper divisors (4635164039).

16718851705 is a wasteful number, since it uses less digits than its factorization.

16718851705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030016.

The product of its (nonzero) digits is 470400, while the sum is 49.

The spelling of 16718851705 in words is "sixteen billion, seven hundred eighteen million, eight hundred fifty-one thousand, seven hundred five".