20065021066 has 8 divisors (see below), whose sum is σ = 30121067520. Its totient is φ = 10024665228.

The previous prime is 20065021061. The next prime is 20065021099. The reversal of 20065021066 is 66012056002.

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 (20065021061) 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, 3919456 + ... + 3924571.

It is an arithmetic number, because the mean of its divisors is an integer number (3765133440).

Almost surely, 2^20065021066 is an apocalyptic number.

20065021066 is a deficient number, since it is larger than the sum of its proper divisors (10056046454).

20065021066 is a wasteful number, since it uses less digits than its factorization.

20065021066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7845308.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 20065021066 its reverse (66012056002), we get a palindrome (86077077068).

The spelling of 20065021066 in words is "twenty billion, sixty-five million, twenty-one thousand, sixty-six".