20166700017 has 8 divisors (see below), whose sum is σ = 26899202880. Its totient is φ = 13439331920.

The previous prime is 20166699991. The next prime is 20166700019. The reversal of 20166700017 is 71000766102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20166700017 - 2²⁴ = 20149922801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20166700019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1274517 + ... + 1290242.

It is an arithmetic number, because the mean of its divisors is an integer number (3362400360).

Almost surely, 2^20166700017 is an apocalyptic number.

It is an amenable number.

20166700017 is a deficient number, since it is larger than the sum of its proper divisors (6732502863).

20166700017 is a wasteful number, since it uses less digits than its factorization.

20166700017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567383.

The product of its (nonzero) digits is 3528, while the sum is 30.

The spelling of 20166700017 in words is "twenty billion, one hundred sixty-six million, seven hundred thousand, seventeen".