20366722666 has 8 divisors (see below), whose sum is σ = 30613864320. Its totient is φ = 10162101228.

The previous prime is 20366722601. The next prime is 20366722667. The reversal of 20366722666 is 66622766302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20366722667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10628856 + ... + 10630771.

It is an arithmetic number, because the mean of its divisors is an integer number (3826733040).

Almost surely, 2^20366722666 is an apocalyptic number.

20366722666 is a deficient number, since it is larger than the sum of its proper divisors (10247141654).

20366722666 is a wasteful number, since it uses less digits than its factorization.

20366722666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21260108.

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 20366722666 in words is "twenty billion, three hundred sixty-six million, seven hundred twenty-two thousand, six hundred sixty-six".