16645201706 has 24 divisors (see below), whose sum is σ = 30306972960. Its totient is φ = 6823497912.

The previous prime is 16645201673. The next prime is 16645201709. The reversal of 16645201706 is 60710254661.

It is a self number, because there is not a number n which added to its sum of digits gives 16645201706.

It is not an unprimeable number, because it can be changed into a prime (16645201709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3690116 + ... + 3694623.

It is an arithmetic number, because the mean of its divisors is an integer number (1262790540).

Almost surely, 2^16645201706 is an apocalyptic number.

16645201706 is a deficient number, since it is larger than the sum of its proper divisors (13661771254).

16645201706 is a wasteful number, since it uses less digits than its factorization.

16645201706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384778 (or 7384771 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 16645201706 in words is "sixteen billion, six hundred forty-five million, two hundred one thousand, seven hundred six".