16685455965 has 32 divisors (see below), whose sum is σ = 28009731072. Its totient is φ = 8470656000.

The previous prime is 16685455933. The next prime is 16685455999. The reversal of 16685455965 is 56955458661.

It is not a de Polignac number, because 16685455965 - 2⁵ = 16685455933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16685455899 and 16685455908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265756 + ... + 322485.

It is an arithmetic number, because the mean of its divisors is an integer number (875304096).

Almost surely, 2^16685455965 is an apocalyptic number.

16685455965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16685455965 is a deficient number, since it is larger than the sum of its proper divisors (11324275107).

16685455965 is a wasteful number, since it uses less digits than its factorization.

16685455965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588341.

The product of its digits is 38880000, while the sum is 60.

The spelling of 16685455965 in words is "sixteen billion, six hundred eighty-five million, four hundred fifty-five thousand, nine hundred sixty-five".