20000166806 has 8 divisors (see below), whose sum is σ = 30008349840. Its totient is φ = 9997383528.

The previous prime is 20000166793. The next prime is 20000166847. The reversal of 20000166806 is 60866100002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340666 + ... + 1355501.

It is an arithmetic number, because the mean of its divisors is an integer number (3751043730).

Almost surely, 2^20000166806 is an apocalyptic number.

20000166806 is a deficient number, since it is larger than the sum of its proper divisors (10008183034).

20000166806 is a wasteful number, since it uses less digits than its factorization.

20000166806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699878.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 20000166806 its reverse (60866100002), we get a palindrome (80866266808).

The spelling of 20000166806 in words is "twenty billion, one hundred sixty-six thousand, eight hundred six".