16685020366 has 32 divisors (see below), whose sum is σ = 28746002880. Its totient is φ = 7115026176.

The previous prime is 16685020357. The next prime is 16685020381. The reversal of 16685020366 is 66302058661.

It is a super-2 number, since 2×16685020366² (a number of 21 digits) contains 22 as substring.

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, 2905450 + ... + 2911186.

It is an arithmetic number, because the mean of its divisors is an integer number (898312590).

Almost surely, 2^16685020366 is an apocalyptic number.

16685020366 is a deficient number, since it is larger than the sum of its proper divisors (12060982514).

16685020366 is a wasteful number, since it uses less digits than its factorization.

16685020366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6748.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 16685020366 in words is "sixteen billion, six hundred eighty-five million, twenty thousand, three hundred sixty-six".