16718353685 has 16 divisors (see below), whose sum is σ = 21889284480. Its totient is φ = 12156891840.

The previous prime is 16718353679. The next prime is 16718353711. The reversal of 16718353685 is 58635381761.

It is a happy number.

It is not a de Polignac number, because 16718353685 - 2¹⁶ = 16718288149 is a prime.

It is a congruent number.

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, 395639 + ... + 435851.

It is an arithmetic number, because the mean of its divisors is an integer number (1368080280).

Almost surely, 2^16718353685 is an apocalyptic number.

It is an amenable number.

16718353685 is a deficient number, since it is larger than the sum of its proper divisors (5170930795).

16718353685 is a wasteful number, since it uses less digits than its factorization.

16718353685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47788.

The product of its digits is 3628800, while the sum is 53.

The spelling of 16718353685 in words is "sixteen billion, seven hundred eighteen million, three hundred fifty-three thousand, six hundred eighty-five".