18206506066 has 32 divisors (see below), whose sum is σ = 32302385280. Its totient is φ = 7530230400.

The previous prime is 18206506061. The next prime is 18206506067. The reversal of 18206506066 is 66060560281.

It is not an unprimeable number, because it can be changed into a prime (18206506061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 981861 + ... + 1000231.

It is an arithmetic number, because the mean of its divisors is an integer number (1009449540).

Almost surely, 2^18206506066 is an apocalyptic number.

18206506066 is a deficient number, since it is larger than the sum of its proper divisors (14095879214).

18206506066 is a wasteful number, since it uses less digits than its factorization.

18206506066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20850.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 18206506066 in words is "eighteen billion, two hundred six million, five hundred six thousand, sixty-six".