20434336066 has 16 divisors (see below), whose sum is σ = 30745909440. Its totient is φ = 10185724080.

The previous prime is 20434336037. The next prime is 20434336067. The reversal of 20434336066 is 66063343402.

It is not an unprimeable number, because it can be changed into a prime (20434336067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2315835 + ... + 2324641.

It is an arithmetic number, because the mean of its divisors is an integer number (1921619340).

Almost surely, 2^20434336066 is an apocalyptic number.

20434336066 is a deficient number, since it is larger than the sum of its proper divisors (10311573374).

20434336066 is a wasteful number, since it uses less digits than its factorization.

20434336066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12249.

The product of its (nonzero) digits is 186624, while the sum is 37.

Adding to 20434336066 its reverse (66063343402), we get a palindrome (86497679468).

The spelling of 20434336066 in words is "twenty billion, four hundred thirty-four million, three hundred thirty-six thousand, sixty-six".